Document:

<PAGE>   1
                                                                   EXHIBIT 10.15

Note: Redacted portions have been marked with (***). The redacted portions are
subject to a request for confidential treatment that has been filed with the
Securities and Exchange Commission.

                               FIRST AMENDMENT TO
               TRAVEL SERVICES ADVERTISING AND PROMOTION AGREEMENT

         THIS FIRST AMENDMENT TO THE TRAVEL SERVICES ADVERTISING AND PROMOTION
AGREEMENT (the "First Amendment"), dated as of November __, 1998 (the "First
Amendment Effective Date") is made and entered into between Yahoo! Inc., a
California corporation ("Yahoo!") and SABRE Interactive ("SI"), a division of
The SABRE Group, Inc., a Delaware corporation. Yahoo! and SI may be referred to
individually as a "Party" and collectively as the "Parties."

                                    RECITALS

         A. Yahoo! and SI entered into the Travel Services Advertising and
Promotion Agreement, dated as of June 30, 1997 (the "Agreement"); and

         B. The Parties desire to make various changes to the Agreement
including, without limitation, extending the Term of the Agreement for an
additional two years, and the Parties are entering into this Amendment to
document such changes to the Agreement.

                                    AGREEMENT

         In consideration of the foregoing and for other good and valuable
consideration, the receipt and adequacy of which are hereby acknowledged, the
Parties agree to amend the Agreement as set forth below:

SECTION 1. DEFINITIONS.

1.1      Defined Terms. Terms used in this First Amendment but not defined
         herein shall have the meaning given them in the Agreement.

SECTION 2. AMENDMENTS.

2.1      The Agreement is hereby amended as follows:

         (a)      Section 1.2 is deleted in its entirety and replaced with the
                  following:

                  "1.2 `Exclusivity Period' means (***) through (***)."

         (b)      Section 2.1 is deleted in its entirety and replaced with the
                  following:

                  "2.1 Operation and Continued Development of the Travel
         Services. The parties will collaborate to operate, promote and further
         develop the Yahoo! Travel Page and the Co-Branded Pages. In this
         regard, the parties shall have the following rights and
         responsibilities:

<PAGE>   2

Note: Redacted portions have been marked with (***). The redacted portions are
subject to a request for confidential treatment that has been filed with the
Securities and Exchange Commission.

                  (a)      Yahoo! Rights and Responsibilities.

                           (1) Yahoo! Travel Page. Yahoo! shall distribute the
                  Yahoo! Travel Page and the Co-Branded Pages (***). Yahoo!
                  shall provide a prominent hyperlink on the Yahoo! Travel Page
                  to the Co-Banded Pages, as such term is described in Section
                  2.2. Such hyperlink shall be placed above the fold on the
                  Yahoo! Travel Page. Subject to Sections 2.1(a)(8) and
                  2.1(b)(6), Yahoo! shall provide a hyperlink to the Yahoo!
                  Travel page from Yahoo!'s home page, currently located at
                  http://www.yahoo.com (the "Home Page Link").

                           (2) Yahoo! Enhancements. From time to time, Yahoo!
                  may request that SI make modifications, enhancements, or other
                  changes to the Co-Branded Pages or elsewhere in the Yahoo!
                  network on properties (each such requested modification,
                  enhancement or change being a "Yahoo! Enhancement"). Upon each
                  such request, the parties will negotiate for the purpose of
                  determining mutually acceptable terms and conditions regarding
                  (i) the nature and scope of the Yahoo! Enhancement, (ii) the
                  allocation of resources necessary by both parties to create
                  the Yahoo! Enhancement, (iii) the schedule for creating and
                  implementing the Yahoo! Enhancement, (iv) such other matters
                  as either party deems appropriate. Although the parties have
                  no obligation to reach any agreement, upon reaching an
                  agreement the parties will develop the Yahoo! Enhancement in
                  accordance with the terms thereof. For the purposes of this
                  Agreement, any operational inconsistencies or programming
                  errors relating to the use of the Co-Branded Pages shall not
                  be considered a Yahoo! Enhancement and shall be cured by the
                  parties immediately.

                           (3) SI Enhancements. Upon notice from SI of a
                  proposed SI Enhancement (as defined below) and Yahoo!'s
                  decision to launch such SI Enhancement on the Co-Branded Pages
                  or elsewhere in the Yahoo! network of properties, Yahoo! will
                  allocate those engineering resources reasonably necessary to
                  consult with SI engineering resources during the development
                  of any SI Enhancements. Yahoo! will collaborate with SI
                  engineering resources during the development of SI
                  Enhancements, as necessary, and will continue to interface
                  with SI engineering resources after the development process
                  for each SI Enhancement is complete. Yahoo! shall be
                  responsible for making any modifications, enhancements, or
                  changes to the Yahoo! Hosted Pages (as described below) that
                  are necessary for SI to launch any SI Enhancement on the
                  Co-Branded Pages.

                           (4) Graphical User Interface Development. Yahoo! will
                  have the right to reasonably approve all graphical user
                  interface development with respect to the Yahoo! Travel Page
                  and the Co-Branded Pages.

                           (5) Page Hosting. Yahoo! will host the following
                  Co-Branded Pages (the "Yahoo! Hosted Pages"):

                                      -2-
<PAGE>   3

Note: Redacted portions have been marked with (***). The redacted portions are
subject to a request for confidential treatment that has been filed with the
Securities and Exchange Commission.

http://travel.yahoo.com/destinations/travelocity_air/yfinal_flts_roundtrip.html
http://travel.yahoo.com/destinations/travelocity/air/yfinal_flts_oneway.html
http://travel.yahoo.com/destinations/travelocity/air/yfinal_flts_multiseg.html
http://travel.yahoo.com/destinations/travelocity_car/yfinal_car.html
http://travel.yahoo.com/destinations/travelocity_hotel/yfinal_hotel.html
http://travel.yahoo.com/destinations/travelocity/terms/tcyterms.html
http://travel.yahoo.com/destinations/travel_disclaimer.html

                           (6) Performance Standards. Yahoo! shall use
                  reasonable best efforts to ensure that the performance of the
                  Yahoo! Travel Page and the Yahoo! Hosted Pages remain
                  comparable (in terms of, among other things, speed) to other
                  similarly functional pages on the Yahoo! Site.

                           (7) Yahoo! Representative: Yahoo! shall designate one
                  (1) individual to serve as the primary point of contact for
                  any issues arising from or related to the development,
                  promotion and other operations contemplated by this Agreement
                  (the "Yahoo! Contact"). Initially, Susan Briggs shall serve as
                  the Yahoo! Contact. Yahoo! may replace the Yahoo! Contact at
                  any time and for any reason upon written notice to SI.

                           (8) Removal of Home Page Link. Yahoo! may discontinue
                  the Home Page Link for any reason upon (***) prior written
                  notice to SI. In the event that Yahoo! exercises such option,
                  for the period in which the Home Page Link is discontinued,
                  SI's monthly payment obligations under Exhibit E shall be
                  adjusted according to the formulae set forth on Exhibit H. If
                  Yahoo! discontinues the Home Page Link pursuant to this
                  Section, then Yahoo! may, in its discretion, contact Yahoo!
                  Users to notify them of, among other things, the
                  discontinuance of the Home Page Link and inform them of other
                  hyperlinks or URL addresses through which they may access SI's
                  Booking Engine.

                  (b)      SI Rights and Responsibilities.

                           (1) SI Enhancements. SI shall be responsible for, and
                  shall have sole discretion in, the design, function and
                  creation of any enhancement to the Travel Services offered
                  through the Travelocity Site. SI shall notify Yahoo! of any
                  such proposed enhancement. If Yahoo! then determines to launch
                  such proposed enhancement (each such enhancement, as so
                  launched, being a "SI Enhancement") on the Co-Branded Pages or
                  elsewhere in the Yahoo! network of properties, SI will
                  allocate those engineering resources reasonably necessary to
                  develop the SI Enhancement in consultation with Yahoo!
                  according to a schedule mutually agreed upon by the parties.
                  SI will consult with the Yahoo! resources referenced in
                  Section 2.1(a)(2) early in the design specification phase of
                  the development process for each SI Enhancement so that such
                  Yahoo! resources may be an active part of the team working to
                  create SI Enhancements. SI shall provide

                                      -3-
<PAGE>   4

Note: Redacted portions have been marked with (***). The redacted portions are
subject to a request for confidential treatment that has been filed with the
Securities and Exchange Commission.

                  Yahoo! technical specifications or other information
                  reasonably requested by Yahoo! so that Yahoo! may make those
                  modifications, enhancements or other changes to the Co-Branded
                  Pages or elsewhere in the Yahoo! network of properties
                  necessary to launch SI Enhancements on such pages. Provided
                  that Yahoo! has completed any such modifications, enhancements
                  or other changes, and otherwise approves of the SI
                  Enhancements, SI will launch the SI Enhancements on the
                  Co-Branded Pages or elsewhere in the Yahoo! network of
                  properties simultaneously with SI's launch of any SI
                  Enhancements on the Travelocity Site.

                           (2) Page Hosting. SI will host all pages in the
                  booking process subsequent to the Yahoo! Hosted Pages (the "SI
                  Hosted Pages").

                           (3) Enhancement Performance. SI will ensure that the
                  performance of each SI Enhancement adheres to the Performance
                  Specifications identified in Exhibit B, part (3).

                           (4) Customer Fulfillment. SI shall be solely
                  responsible for processing orders on a real-time basis, and
                  for fulfilling booking requests, from the users obtaining
                  Travel Services through the Yahoo! Site ("Yahoo! Users")
                  through the Co-Branded Pages, and shall ensure that
                  fulfillment of such transactions is performed according to the
                  Performance Specifications set forth in Exhibit B, part (3).
                  Additionally, SI will apply Yahoo! branding in a form subject
                  to Yahoo!'s prior written approval ("Yahoo! Branding") to the
                  packaging used to ship all tickets purchased through the
                  Co-Branded Pages, and all tickets, jackets and itineraries
                  will also include Yahoo! Branding. Yahoo! Branding may not be
                  altered without Yahoo!'s prior written consent. SI and
                  Travelocity branding will likewise be prominently displayed.

                           (5) Customer Service. SI will allocate a unique
                  800/888 phone number as the customer service line for Travel
                  Services furnished through the Co-Branded Pages. This phone
                  number will be the customer service line for Yahoo! Users. SI
                  will establish a customer care team to collaborate with a
                  customer care team established by Yahoo! to strive for high
                  levels of customer service. SI will comply with the Customer
                  Service Metrics set forth in Exhibit B, part (2); provided
                  that in any event, SI will provide, in all material respects,
                  the same level of customer service to Yahoo! Users as SI
                  provides to users of the Travelocity Site and provided further
                  that SI shall ensure that its customer service performance
                  pursuant to this Agreement meets or exceeds all generally
                  accepted industry standards.

                           (6) Performance Penalties. In the event that SI fails
                  to achieve the Performance Specifications identified in
                  Exhibit B, part (3), then Yahoo! may (i) (***), and (ii)
                  (***), provided that the (***) will be (***) no more than
                  (***) after SI satisfactorily demonstrates to Yahoo! that the
                  problem(s)

                                      -4-
<PAGE>   5

Note: Redacted portions have been marked with (***). The redacted portions are
subject to a request for confidential treatment that has been filed with the
Securities and Exchange Commission.

                  causing SI to fail to meet such Performance Specifications
                  have been addressed to the extent necessary to cause such
                  Performance Specifications to be met. In the event that SI
                  fails to meet the Customer Service Metrics identified in
                  Exhibit B, part (2), for (***), then Yahoo! may (***) until
                  such time as SI meets the Customer Service Metrics for (***).

                           (7) SI Representative. SI shall designate one (1)
                  individual to serve as the single point of contact for any
                  issues arising from or related to the development, promotion
                  and other operations contemplated by this Agreement (the "SI
                  Contact"). Initially, Michael Altomari shall serve as the SI
                  Contact. SI may replace the SI Contact at any time and for any
                  reason upon written notice to Yahoo!.

                           (c) Ownership of SI Enhancements and Look and Feel
         of Pages. SI shall own all right, title and interest in and to any and
         all copyrights, patents, trademarks, trade secrets, and other
         intellectual or industrial property rights in or related to the SI
         Enhancements and the "look and feel" of the SI Hosted Pages where such
         look and feel is consistent with the look and feel of the Travelocity
         Site. Yahoo! shall own all right, title and interest in and to any and
         all copyrights, patents, trademarks, trade secrets, and other
         intellectual or industrial property rights in or related to the "look
         and feel" of the Yahoo! Hosted Pages where such look and feel is
         consistent with the look and feel of the Yahoo! Site."

         (c)      Section 2.3 is deleted in its entirety and replaced with the
                  following:

                           "2.3 Year 2000. Yahoo! and SI each covenants for
                  themselves that the equipment and software such party will
                  use to host and display the Yahoo! Hosted Pages or the SI
                  Hosted Pages during the Term will not be materially impaired
                  by failures to process, calculate, compare or sequence date
                  data accurately. This covenant does not cover the
                  transmission to such party of any data from third parties or
                  any equipment or software not controlled by such party,
                  including without limitation Internet connections and
                  backbones, third party servers and software, end-user
                  equipment and software, internet service provider equipment
                  and software, and telecommunications and/or satellite
                  equipment, or the effects produced by any of the foregoing."

         (d)      Section 2.4(c) is deleted in its entirety and replaced with
                  the following:

                           "(c)     Registration and User Information.

                                    (1) Ownership of User Information. All User
                           Information registered prior to (***) shall be the
                           sole property of (***), provided that (***) shall
                           have an (***) right to (***) such User Information in
                           any manner (***) deems appropriate, subject to
                           applicable laws and

                                      -5-
<PAGE>   6

Note: Redacted portions have been marked with (***). The redacted portions are
subject to a request for confidential treatment that has been filed with the
Securities and Exchange Commission.

                           regulations. All User Information registered on or
                           after (***) shall be the sole property by (***),
                           provided that (***).

                                    (2) SI's Use of User Information. SI's use
                           of User Information shall be restricted as follows:

                                             (i) Under no circumstances, and at
                                    no time (whether during or after the Term),
                                    shall SI use User Information in violation
                                    of any applicable law or regulation or to
                                    communicate with Yahoo! Users unless such
                                    Yahoo! Users have expressly consented to
                                    receive such communications. Further, all
                                    such communications shall be subject to
                                    Yahoo!'s prior approval, which approval
                                    shall not be unreasonably withheld.

                                             (ii) Notwithstanding Section
                                    2.4(c)(2)(i), SI may send (***) to Yahoo!
                                    Users who registered prior to (***), subject
                                    to Yahoo!'s prior approval. Such
                                    communication shall be co-branded and shall
                                    explain Yahoo!'s privacy policy, give such
                                    Yahoo! Users the ability to expressly
                                    consent to receive additional communications
                                    from SI and Yahoo!, describe the type of
                                    information they would receive and the
                                    potential benefits they could obtain, and
                                    any other information agreed upon by the
                                    parties.

                                             (iii) SI may place a dialog box on
                                    (***) Co-Branded Page mutually selected by
                                    the parties, allowing Yahoo! Users to
                                    expressly consent to receive communications
                                    from SI and Yahoo! related to Travel
                                    Services. The parties shall agree upon the
                                    design and specific placement of such dialog
                                    box. Such communications shall be subject to
                                    the restrictions of this Section 2.4(c).

                                             (iv) It is expressly understood
                                    that, subject to Section 2.4(C)(2)(I), SI
                                    may use User Information to deliver (***)
                                    communications to Yahoo! Users during the
                                    (***) prior to the expiration of the Term
                                    and to deliver (***) communication within
                                    (***) after the expiration of the Term. Such
                                    communications shall be for the purpose of
                                    thanking Yahoo! Users for their patronage of
                                    the Co-Branded Pages, informing them that
                                    access to SI's Travel Services in
                                    conjunction with Yahoo! is no longer
                                    available, informing such Yahoo! Users of
                                    the Travel Services available through the
                                    Travelocity Site, or other sites, including
                                    relevant URL addresses, and providing Yahoo!
                                    Users with the option to consent to receive
                                    additional such communications from SI. SI
                                    may copy the User Information of those
                                    Yahoo! Users who consent to receive such
                                    further communications. Such copy shall not
                                    be considered User Information and shall not
                                    be subject to the restrictions of this
                                    Agreement. Rather, such copy shall be the
                                    sole property of SI. However, SI shall have

                                      -6-
<PAGE>   7

Note: Redacted portions have been marked with (***). The redacted portions are
subject to a request for confidential treatment that has been filed with the
Securities and Exchange Commission.

                                    no right to deliver the communications
                                    described in this Section 2.4(c)(2)(iv) in
                                    the event of the Agreement's termination
                                    pursuant to Section 11.2.

                                             (v) General, nonspecific
                                    demographic or other statistical information
                                    derived or gathered from the User
                                    Information that does not identify
                                    particular Yahoo! Users or their respective
                                    accounts shall not be considered User
                                    Information. SI will make such information
                                    available to Yahoo! to the extent that SI
                                    possesses such information.

                                             (vi) SI shall have (***) for
                                    routine internal business purposes
                                    including, for example, record-keeping,
                                    audits and responses to litigation or
                                    governmental investigations. Under no
                                    circumstances, however, shall SI (i) use
                                    such User Information to communicate with
                                    Yahoo! Users other than as expressly
                                    provided for in this Agreement; or (ii)
                                    disclose any such User Information to third
                                    parties except (x) as required by law or
                                    government authority, or (y) in order to
                                    facilitate the completion of Travel Services
                                    transactions for individual Yahoo! Users
                                    (e.g., SI may provide an individual Yahoo!
                                    User's User Information to an airline to
                                    complete the purchase of an airline ticket
                                    by such Yahoo! User)."

         (e)      Section 2.5 is deleted in its entirety and replaced with the
                  following:

                           "2.5 (***). Prior to (***) Yahoo! will provide
                  written notice (the "First Presentment Notice") to SI in the
                  event that Yahoo! intends to offer Yahoo! Users (***). Yahoo!
                  shall describe the opportunity and Yahoo!'s business
                  requirements for the opportunity in the First Presentment
                  Notice. Thereafter, if Yahoo! receives a written proposal from
                  SI to furnish such services to Yahoo! (the "SI Proposal")
                  within (***) of SI's receipt of the First Presentment Notice,
                  the parties will (***). Without limitation, Yahoo! will notify
                  SI of its objections to SI's proposal and give SI a reasonable
                  opportunity to address those objections. If SI declines to
                  commence negotiations with Yahoo! regarding any opportunity
                  described in the First Presentment Notice (or fails to submit
                  the SI Proposal within (***) after receiving the First
                  Presentment Notice), or if the parties fail to reach agreement
                  in principle subject to definitive documentation within (***)
                  following Yahoo!'s receipt of the SI Proposal (or such later
                  date as is agreed by the parties), Yahoo! may (***) relating
                  to the opportunity described in the First Presentment Notice,
                  with (***)."

         (f)      Section 2.6 is deleted in its entirety and replaced with the
                  following:

                           "2.6 Log Files and Statistics. SI shall provide
                  Yahoo!, at least (***), with electronic copies of all log
                  files and statistics resulting from

                                      -7-
<PAGE>   8

Note: Redacted portions have been marked with (***). The redacted portions are
subject to a request for confidential treatment that has been filed with the
Securities and Exchange Commission.

                  Yahoo! Users use of the Co-Branded Pages and other SI-branded
                  pages on the Travelocity Site which follow the Co-Branded
                  Pages in the booking sequence, including those statistics
                  relating to the Performance Specifications identified in
                  Exhibit B, part (3), the Customer Service Metrics identified
                  in Exhibit B, part (2), the information identified Exhibit G,
                  and any other statistics the parties may agree are important
                  for understudying the performance of the Travel Services. In
                  addition, the parties will use good faith efforts to jointly
                  enhance the on-line reporting mechanism utilized as of the
                  First Amendment Effective Date to provide the log files and
                  statistics to Yahoo! pursuant to this Section 2.6. SI will
                  promptly provide Yahoo! with reasonable assistance upon
                  request to permit Yahoo! to read and utilize such electronic
                  files."

         (g)      Section 3.2 and Section 3.3 are deleted in their entirety and
                  replaced with the following:

                           "3.2 Package Services. Notwithstanding Section 3.1,
                  nothing in this Agreement shall limit Yahoo!'s ability to
                  include one or more (***) for Packaged Services anywhere on
                  the Yahoo! Site; provided that (i) Yahoo! shall not include
                  any (***) for Packaged Services on the Yahoo! Site, which
                  (***) is provided by (***), and (ii) any such (***) for
                  Package Services do not allow Yahoo! Users to (***) prior to
                  the completion of booking a reservation for Package Services.
                  SI agrees that Yahoo! Users will not be able to (***) on
                  pages that appear to the Yahoo! Users prior to the Yahoo!
                  User's completion of booking a reservation for any of the
                  Travel Services."

         (h)      Section 4.3 is deleted in its entirety and replaced with the
                  following:

                           "(a) By Yahoo!. Yahoo! shall not display any banner
                  advertisements or other promotional materials on the
                  Co-Branded Pages for (***). Further, Yahoo! shall not display
                  any banner advertisements or other promotional materials on
                  the Yahoo! Travel Page for any of the following (***). In
                  addition, Yahoo! shall sell no more than (***) of available
                  advertising inventory on the Yahoo! Travel Page to (***). SI
                  may add additional third parties that (***) to (***) upon
                  giving (***) written notice to Yahoo!; provided that, Yahoo!
                  shall be permitted to (***) to any such party provided that
                  such obligation exists (or would cause Yahoo! to (***) if
                  revoked) as of the date of such notice. It is expressly
                  understood that for the purposes of this Section 4.3(a), third
                  parties that (***) (such as an airline, hotel or car rental
                  provider), shall not be considered (***) and Yahoo! may
                  provide such third parties advertising services. If the
                  parties do not execute an insertion order for any Advertising
                  Rights SI may purchase in (***) pursuant to Section 5.1, then
                  (***).

                                      -8-
<PAGE>   9

Note: Redacted portions have been marked with (***). The redacted portions are
subject to a request for confidential treatment that has been filed with the
Securities and Exchange Commission.

                           (b) By SI. SI shall not display Yahoo! Users any
                  banner advertisements or other promotional materials on any
                  pages of the Travelocity Site that follow the Co-Branded Pages
                  in the booking sequence for the following (***). Yahoo! may
                  add additional third parties that (***) to the exclusion
                  identified in the previous sentence upon giving (***) written
                  notice to SI; provided that, SI shall be permitted to (***) to
                  any such party provided that such obligation exists (or would
                  cause SI to (***) if revoked) as of the date of such notice."

         (i)      Section 5.1 is deleted in its entirety and replaced with the
                  following:

                           "5.1 Banner Advertisements. Prior to the Effective
                  Date, SI has placed with Yahoo! insertion order #6180 for
                  (***) of Advertising Rights on the Yahoo! Site. Prior to the
                  First Amendment Effective Date, SI will place an insertion
                  order for (***) of Advertising Rights on the Yahoo! Site
                  during (***) as provided on Exhibit C-1. The parties will
                  (***) for Advertising Rights on the Yahoo! Site during (***).
                  Although the parties shall have (***), they hereby set a goal
                  of (***) on or before (***).

                                    In addition, Yahoo! shall run banner
                  advertisements for the Travelocity Site as set forth in
                  Exhibit C. SI shall be permitted to (***) subject to Yahoo!'s
                  reasonable approval, provided that (i) SI provides Yahoo!
                  with reasonable prior written notice of (***), (ii) (***)
                  completes and submits Yahoo!'s form of insertion order in
                  accordance with Yahoo!'s policies then in effect, and (iii)
                  SI provides such other information regarding (***) as Yahoo!
                  may reasonably request. Except as expressly provided in the
                  foregoing sentences, SI shall (***). All such banner
                  advertisements shall be subject to Yahoo!'s standard terms
                  and conditions as set forth in Exhibit D, which Yahoo! may
                  modify from time to time in its reasonable discretion upon
                  written notice to SI. In the event of any conflict between
                  the provisions of this Agreement and such standard terms and
                  conditions or any advertising insertion order, (***) shall
                  govern."

         (j)      Section 5.3 is deleted in its entirety and replaced with the
                  following:

                           "5.3 Front Page Promotion. Yahoo! shall feature (***)
                  SI promotions for the Travelocity Site on the Yahoo! Home Page
                  during the period from (***) through (***). Each such
                  promotion shall run for a period of (***) according to the
                  schedule identified in Exhibit C-1. SI shall be responsible
                  for the content offerings and value of such promotions,
                  subject to the written approval of Yahoo!. Yahoo! shall be
                  solely responsible for running such promotions and shall have
                  the right to reasonably approve design specifications based on
                  Yahoo!'s standard guidelines."

         (k)      Section 7 is deleted in its entirety and replaced with the
                  following:

                                      -9-
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Note: Redacted portions have been marked with (***). The redacted portions are
subject to a request for confidential treatment that has been filed with the
Securities and Exchange Commission.

                           "Yahoo! hereby grants to SI, during the Term of this
                  Agreement, a (***) license to (***), Yahoo!'s name, logo and
                  such other trademarks as Yahoo! uses from time to time with
                  respect to the Yahoo! Site solely for the purposes of
                  fulfilling its obligations under this Agreement and solely in
                  accordance with Yahoo!'s trademark guidelines in effect from
                  time to time. Yahoo! shall have the right to approve any such
                  use of Yahoo!'s name, logo and other trademarks. SI hereby
                  grants to Yahoo!, during the Term of this Agreement, a (***)
                  license (***) SI's name, logo and such other trademarks as SI
                  uses from time to time with respect to the Travelocity Site
                  solely for the purposes of fulfilling its obligations under
                  this Agreement and solely in accordance with SI's trademark
                  guidelines in effect from time to time. SI shall have the
                  right to approve any such use of SI's name, logo and other
                  trademarks."

         (l)      Section 11.1 is deleted in its entirety and replaced with the
                  following:

                           "11.1 Term. This Agreement shall commence on the
                  Effective Date and continue through December 31, 2000 unless
                  terminated earlier in accordance with Section 11.2 (the
                  "Term").

         (m)      Section 11.2(a) is deleted in its entirety and replaced with
                  the following:

                           "(a) By Either Party. This Agreement may be
                  terminated by either party (i) immediately upon written
                  notice if the other party (A) becomes insolvent; (B) files a
                  petition in bankruptcy; or (C) makes an assignment for the
                  benefit of its creditors; or (ii) (***) after written notice
                  to the other party of such other party's breach of any of its
                  obligations under this Agreement in any material respect,
                  which breach is not remedied within (***) of such notice.
                  Without in any way limiting Yahoo!'s right to terminate this
                  Agreement for SI's material breach of any other obligation
                  under this Agreement and subject to the procedure described
                  in this Section 11.2(a), the parties specifically recognize
                  Yahoo! shall have the right to terminate this Agreement for
                  any material breach by SI of Section (***) and Section (***)
                  and/or Section (***)."

         (n)      Section 12.7 is deleted in its entirety and replaced with the
                  following:

                           "12.7 Force Majeur. Neither party shall be liable
                  for failure to perform or delay in performing any obligation
                  (other than the payment of money) under this Agreement if
                  such failure or delay is due to (a) fire, flood, earthquake,
                  strike, war (declared or undeclared), embargo, blockade,
                  legal prohibition, governmental action, riot, insurrection,
                  damage, destruction or any other similar cause beyond the
                  control of such party, or (b) any adverse impact on the
                  Yahoo! Site, the Yahoo! Travel

                                      -10-
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subject to a request for confidential treatment that has been filed with the
Securities and Exchange Commission.

                  Page, the Co-Branded Pages, or the Travelocity Site resulting
                  from a software, systems, hardware and related equipment of
                  any third party not being Year 2000 Compliant or from any
                  inaccuracies, delays, interruptions or errors as a result of
                  receiving data in two digit year date other formats that are
                  not Year 2000 Compliant from any third parties. For purposes
                  of this Section the term "Year 2000 Compliant" means that the
                  software program or system (x) will operate and produce data
                  before, on or after January 1, 2000 (including taking into
                  effect that such year is a leap year), accurately and without
                  delay, interruption or error relating to the fact that the
                  time at which and the date on which such items are operating
                  is on or after 12:00 a.m. on January 1, 2000, or (y) will
                  accept, calculate, process, maintain, write and output,
                  accurately and without delay, interruption or error relating
                  to the fact that the time at which and the date on which such
                  items are operating is on or after 12:00 a.m. on January 1,
                  2000, or both, and any time period determined or to be
                  determined based on any such times or date, or both."

         (o)      Section 12.14 is added to the agreement as follows:

                           "12.4 Intellectual Property. No licenses will be
                  deemed to have been granted by either party to any of its
                  copyrights, patents, trademarks, trade secrets, or other
                  intellectual or industrial property rights, except as
                  otherwise expressly provided in this Agreement."

2.2      Exhibit A of the Agreement is deleted in its entirety and replaced with
         "Exhibit A" as attached to this First Amendment.

2.3      Exhibit B of the Agreement is deleted in its entirety and replaced with
         "Exhibit B" as attached to this First Amendment.

2.4      Exhibit C of the Agreement is deleted in its entirety and replaced with
         "Exhibit C" as attached to this First Amendment.

2.5      Exhibit D of the Agreement is deleted in its entirety and replaced with
         "Exhibit D" as attached to this First Amendment.

2.6      Exhibit E of the Agreement is deleted in its entirety and replaced with
         "Exhibit E" as attached to this First Amendment.

2.7      Exhibit F of the Agreement is deleted in its entirety and replaced with
         "Exhibit F" as attached to this First Amendment.

2.8      Exhibit G of the Agreement is deleted in its entirety and replaced with
         "Exhibit G" as attached to this First Amendment.

                                      -11-
<PAGE>   12

Note: Redacted portions have been marked with (***). The redacted portions are
subject to a request for confidential treatment that has been filed with the
Securities and Exchange Commission.

2.9      Exhibit H as attached to this First Amendment is inserted as "Exhibit
         H" of the Agreement.

SECTION 3. MISCELLANEOUS.

3.1      Counterparts. This First Amendment may be executed in several
         counterparts, all of which taken together shall constitute one single
         agreement between the Parties.

3.2      Entire Agreement. This First Amendment constitutes the entire
         agreement between the Parties with respect to the subject matter of
         this First Amendment and there are no representations, understandings
         or agreements relating to this First Amendment which are not fully
         expressed herein, including without limitation the Letter of
         Understanding dated as of October, 1998 between Yahoo! and SI.

                            [SIGNATURE PAGE FOLLOWS]

                                      -12-
<PAGE>   13

Note: Redacted portions have been marked with (***). The redacted portions are
subject to a request for confidential treatment that has been filed with the
Securities and Exchange Commission.

         IN WITNESS WHEREOF, the Parties have each caused this First Amendment
to be signed and delivered by its duly authorized officer, all as of the First
Amendment Effective Date.

<TABLE>

<S>                                                          <C>
YAHOO! INC.                                                  SABRE INTERACTIVE, a division
                                                             of The SABRE Group, Inc.

By: /s/ Ellen Siminoff                                       By: /s/ Michael Durham
    ------------------                                           ------------------

Name: Ellen Siminoff                                         Name: Michael Durham

Title: VP                                                    Title: CEO

Address:                                                     Address:

Attn:  Ellen Siminoff, VP, Business and                      Attn:  Corporate Secretary
       Strategy Development                                  MD 4204
3400 Central Expressway, Suite 201                           4255 Amon Carter Blvd.
Santa Clara, CA  95051                                       Fort Worth, TX  76155
Tel:  (408) 731-3300                                         Tel:  (817) 967-6877
Fax:  (408) 731-332                                          Fax:  (817) 967-1215
email:  ellen@yahoo-inc.com
                                                             With a copy to:
With a copy to:
                                                             Haynes and Boone, L.L.P.,
Yahoo! Inc.                                                  Attn:  Terry W. Conner
Attn:  John Place, General Counsel                           901 Main Street, Suite 3100
3420 Central Expressway                                      Dallas, TX  75202-3789
Santa Clara, CA  95051                                       Tel:  (214) 651-5604
Tel:  (408) 731-3474                                         Fax:  (214) 651-5940
Fax:  (408) 731-3400                                         e-mail:  connert@hayboo.com
e-mail:  jplace@yahoo-inc.com
</TABLE>

                                      -13-
<PAGE>   14

Note: Redacted portions have been marked with (***). The redacted portions are
subject to a request for confidential treatment that has been filed with the
Securities and Exchange Commission.

                                    EXHIBIT A

                                 SCREEN IMAGES

                                      -14-
<PAGE>   15
YAHOO!TRAVEL                                                Home - Yahoo! - Help
--------------------------------------------------------------------------------

                               Enter Your E-mail:

                               ------------------

        Email not collected without your approval...click GO for details

HELLO, [GUEST]                                    CURRENT RESERVATIONS - SIGN IN

YAHOO! TRAVEL

EXPRESS BOOKING                    MAKE RESERVATIONS
Search for roundtrip flights       AIR  CAR  HOTEL  VACATIONS  CRUISES  SPECIALS

From:          To:
     ----------   ----------
Total passengers?  1               PLAN YOUR TRIP
                 -----
Departing:   Jan   1                                                  Search
            ---------
Returning:   Jan   5               ----------------------------------
            ---------
For more options, please select Air

MY TRIPS

o  Current Reservations
o  Check Flight Time

BY DESTINATION:

o  AFRICA               o  EUROPE
o  ANTARCTICA           o  MIDDLE EAST
o  ASIA                 o  NORTH AMERICA
o  CARIBBEAN            o  OCEANIA
o  CENTRAL AMERICA      o  SOUTH AMERICA

--------------------------------------------------------------------
BY ACTIVITY:

  o  ARTS & EDUCATION     o  RESORTS
  o  CRUISES & TOURS      o  SPORTS & ADVENTURE

--------------------------------------------------------------------
BY LIFESTYLE:

  o  LIFESTYLE TRAVEL information for families, seniors, LGB, etc...

BEST FARES               Edit                  SPOTLIGHT
                                           Travel and Leisure
Arrival City:   Fare    Book It
                                              [PICTURE]
DEPARTURE: NEW YORK CITY, NY
                                            THE HOLIDAYS
Paris, France  $308.00  Fare Info             ON FIFTH
                                               AVENUE
DEPARTURE: SEATTLE/TACOMA, WA             No street is more
                                         festive in December.
Honolulu, HI $388.00 Book It             Choose a quiet time
                                           (late at night, early
DEPARTURE: SAN FRANCISCO, CA             Sunday morning) and
                                         take a tour by foot, in
London, UK $428.00 Fare Info             a...

How do I use this? - Disclaimer
      Add to My Yahoo!

TRAVEL COMMUNITY

o  UNITED STATES              o  EUROPE
   clubs, message boards         clubs, message boards

o  CRUISES                    o  RESORTS
   clubs, message boards         clubs

o  FAMILY TRAVEL              o  GENERAL TRAVEL
   clubs, message boards         clubs, message boards, chat

More community information...

--------------------------------------------------------------------------------
               Copyright(C)1999 Yahoo! Inc. All rights reserved.

http://travel.yahoo.com/destinations                                    11/22/99

<PAGE>   16
Note: Redacted portions have been marked with (***). The redacted portions are
subject to a request for confidential treatment that has been filed with the
Securities and Exchange Commission.

                                    EXHIBIT B

               TECHNICAL SPECIFICATIONS, CUSTOMER SERVICE METRICS,
              PERFORMANCE SPECIFICATIONS AND DEVELOPMENT MILESTONES

(1)      Technical Specifications

         o        SI branding incorporated in the Co-Branded Pages

                  o        Width = 170 pixels

                  o        Height = 40 pixels

                  o        File size less than or equal to 2.5K

(2)      Customer Service Metrics

         o        E-mail:

                  o        Each SI Hosted Page shall have an e-mail link to
                           customer service.

                  o        All e-mail questions/comments will receive e-mail
                           responses within (***) of receipt.

                  o        Questions relating to previously issued tickets will
                           be responded to via e-mail or telephone within(***)
                           of receipt.

                  o        SI shall design the customer service interface so as
                           to encourage Yahoo! Users to resolve questions via
                           e-mail and to complete as much of the booking
                           process as reasonably possible without necessitating
                           telephone access to customer service representatives

         o        Telephone Service:

                  o        SI shall provide telephone access to customer
                           service to resolve ticketing and other issues via a
                           toll-free number, which number shall be prominently
                           displayed on a customer service age linked to each
                           Co-Branded Page. Such telephone number shall be
                           staffed from 8:00 a.m. until 6:00 p.m. (Central
                           Time) or during the hours in which SI's primary
                           customer service line is staffed, whichever is
                           greater.

                  o        The time to answer customer service telephone calls,
                           through either human or mechanical means, shall not
                           be greater than (***).

                  o        The per-call average hold time, measured from when a
                           Yahoo! User selects a customer service option to
                           when a human operator answers the call, shall be
                           less than or equal to (***) for at least (***) of
                           all customers, measured on a daily basis.

                                      -15-
<PAGE>   17

Note: Redacted portions have been marked with (***). The redacted portions are
subject to a request for confidential treatment that has been filed with the
Securities and Exchange Commission.

(3)      Performance Specifications

                  o        Downtime: While linked to the Yahoo! Site, the SI
                           service must be functional at least (***) of each
                           calendar month, excluding downtime scheduled by SI
                           for routine maintenance purposes; provided that, SI
                           shall provide Yahoo! no less than (***) prior written
                           notice of any such routine maintenance that shall
                           cause the SI service to be inoperable for greater
                           than (***) on any one occasion.

                  o        Fulfillment: (***) of all tickets ordered by Yahoo!
                           Users will be fulfilled or shipped, as required, no
                           later than (***) after receipt of the applicable
                           order, provided that all information supplied by
                           Yahoo! Users is accurate and complete, as measured on
                           a daily basis.

(4)      User information

                  o        Personal: first name, last name, street address,
                           city, state, country, postal code, user name,
                           password, email address

                  o        Other: frequent flyer accounts, frequent renter
                           accounts, frequent hotel guest accounts, credit card
                           accounts if provided, airplane seat preference and
                           airplane special meal preference

                                      -16-
<PAGE>   18

Note: Redacted portions have been marked with (***). The redacted portions are
subject to a request for confidential treatment that has been filed with the
Securities and Exchange Commission.

                                    EXHIBIT C

                     ADVERTISING AND PROMOTIONAL ACTIVITIES

1997 Banner Advertisements

<TABLE>
<CAPTION>

                                                  DATE                     PLACEMENT                  PAGE VIEWS

<S>                     <C>                   <C>                    <C>                        <C>
YAHOO! METROS             Total for           (***)                                                      (***)
                          Metro
                        Properties
BEATRICE'S WEB                                (***)                       Travel Content                 (***)
GUIDE                                                                       Sponsorship

MAIN SITE                                     (***)                       Travel Package                 (***)

                                              (***)                  Travel Category Banners             (***)

                                              (***)                      Business Category               (***)
                                                                             Banners

                                              (***)                        News Banners                  (***)

                                              (***)                        Run of Yahoo                  (***)

                                              (***)                   (***) Front Page Promo             (***)

                                              (***)                   (***) Front Page Promo             (***)

                                              (***)                        Search keywords               (***)

                                              (***)                        Search keywords               (***)
                                                                                                -------------
                                                                                                         (***)
                                                                                                =============
YELLOW PAGES            All Metros            (***)                   Hotels, Resorts, Bed
                                                                           & Breakfasts                  (***)
                                                                                                -------------
                                                                                                         (***)
                                                                                                =============

                                                                                          TOTAL          (***)
                                                                                                -------------
</TABLE>

The parties acknowledge that the foregoing schedule supersedes Insertion Order
#1087, which is canceled.

                                      -17-
<PAGE>   19

Note: Redacted portions have been marked with (***). The redacted portions are
subject to a request for confidential treatment that has been filed with the
Securities and Exchange Commission.

                                    EXHIBIT C

                     ADVERTISING AND PROMOTIONAL ACTIVITIES

1998 Banner Advertisements

<TABLE>
<CAPTION>

<S>                     <C>                   <C>                    <C>                        <C>
YAHOO! METROS             Total for           (***)                                                      (***)
                          Metro
                        Properties
BEATRICE'S WEB GUIDE                          (***)                      Travel Content                  (***)
                                                                          Sponsorship

MAIN SITE                                     (***)                      Travel Category                 (***)
                                                                            Banners

                                              (***)                       Run of Yahoo                   (***)

                                              (***)                  (***) Front Page Promo              (***)

                                              (***)                  (***) Front Page Promo              (***)

                                              (***)                  (***) Front Page Promo              (***)

                                              (***)                  (***) Front Page Promo              (***)

                                              (***)                     Search keywords                  (***)
                                                                                                -------------
                                                                                                         (***)
                                                                                                =============
YELLOW PAGES            All Metros            (***)                    Hotels, Resorts, Bed
                                                                          & Breakfasts                   (***)
                                                                                                -------------
                                                                                                         (***)
                                                                                                =============

                                                                                          TOTAL          (***)
                                                                                                -------------
</TABLE>

                                      -18-
<PAGE>   20

Note: Redacted portions have been marked with (***). The redacted portions are
subject to a request for confidential treatment that has been filed with the
Securities and Exchange Commission.

                                   EXHIBIT C-1

                     ADVERTISING AND PROMOTIONAL ACTIVITIES

<TABLE>
<CAPTION>
MAIN SITE                                      DATES                                   PAGE VIEWS
<S>                                  <C>                                               <C>
Yahoo Front Page Promotions (***)    (***)                                               (***)

Business and                                                                             (***)
Economy/companies/travel*

Yahoo run of network                                                                     (***)

YAHOO TRAVEL                                                                             (***)
run of Yahoo! Travel
Destinations

SEARCHWORDS ...
(***)                                                                                    (***)

Totals:                                                                                  (***)
--------------------------------------------------------------------------------
</TABLE>

                                      -19-
<PAGE>   21

Note: Redacted portions have been marked with (***). The redacted portions are
subject to a request for confidential treatment that has been filed with the
Securities and Exchange Commission.

                                    EXHIBIT D

              TERMS AND CONDITIONS FOR ADVERTISING INSERTION ORDERS

STANDARD TERMS AND CONDITIONS FOR YAHOO! ADVERTISING

The following terms and conditions (the "Standard Terms") shall be deemed to be
incorporated into any insertion order entered into under this Agreement (the
"Insertion Order"):

1. POSITIONING. Except as otherwise expressly provided in the Insertion Order,
positioning of advertisements within the Yahoo Site or on any page is at the
sole discretion of Yahoo. Advertiser acknowledges that Yahoo has not made any
guarantees with respect to usage statistics or levels of impressions for any
advertisement. Yahoo provides Advertiser with estimated usage statistics only
as a courtesy to the Advertiser and shall not be held liable for any claims
relating to said usage statistics.

2. LIMITATION OF LIABILITY. In the event that Yahoo fails to publish an
advertisement in accordance with the schedule agreed upon pursuant to this
Agreement (or in the event of any other failure, technical or otherwise, of
such advertisement to appear as provided in the Insertion Order), the sole
liability of Yahoo to Advertiser shall be limited to either a refund of the
advertising fee or placement of the advertisement at a later time in a
comparable position at customer's sole option.

3. PROVISION OF ADVERTISING MATERIALS. Advertiser will provide all materials
for the advertisement (including GIF files), in accordance with Yahoo's
policies in effect from time to time, including (without limitation) the manner
of transmission to Yahoo and the time prior to publication of the
advertisement. Yahoo shall not be required to publish any advertisement that is
not received in accordance with such policies.

4. RIGHT TO REJECT ADVERTISEMENT. All contents of advertisements are subject to
Yahoo's approval in accordance with policies generally applicable to Yahoo!
advertisers Yahoo! reserves the right to reject or cancel any advertisement,
insertion order, space reservation or position commitment at any time. In
addition, Yahoo! shall have the absolute right to reject any URL link embodied
within any advertisement.

                                      -20-
<PAGE>   22

Note: Redacted portions have been marked with (***). The redacted portions are
subject to a request for confidential treatment that has been filed with the
Securities and Exchange Commission.

                                    EXHIBIT E

                                    PAYMENTS

<TABLE>
<CAPTION>

Month                                           Fee                                 Payment Due Date
-----                                         -------                               ----------------
<S>                                           <C>                                   <C>
(***)                                         $ (***)                               (***)
(***)                                         $ (***)                               (***)
(***)                                         $ (***)                               (***)
(***)                                         $ (***)                               (***)
(***)                                         $ (***)                               (***)
(***)                                         $ (***)                               (***)
(***)                                         $ (***)                               On or before the (***) of
                                                                                    each applicable (***)
(***)                                         $ (***)                               On or before the (***) of
                                                                                    each applicable (***)
</TABLE>

Payments from (***) (the "(***) Fixed Amount"): The (***) Fixed Amount shall be
paid according to a schedule to be agreed upon by the Parties. If the total
number of tickets issued for air travel through the Co-Branded Pages during the
period from (***) until (***) (the "Completed Air Transactions") is greater
than (***) and less than (***), there shall be no adjustment to the (***) Fixed
Amount. If the number of Completed Air Transactions is less than (***), the
(***) Fixed Amount shall be reasonably adjusted (***). If the number of
Completed Air Transactions is greater than (***), the (***) Fixed Amount shall
be reasonably adjusted (***). If the Parties are unable to negotiate reasonable
adjustments as contemplated by the preceding two sentences by (***), then
either Party (***).

                                      -21-
<PAGE>   23

Note: Redacted portions have been marked with (***). The redacted portions are
subject to a request for confidential treatment that has been filed with the
Securities and Exchange Commission.

                                    EXHIBIT F

                                   COMMISSIONS

F-1      Commissions for (***):

<TABLE>
<CAPTION>

         Net SI Commission                     Commission to Yahoo!
         -----------------                     --------------------
<S>                                            <C>
         (***)                                 (***)
         (***)                                 (***)
         more than (***)                       (***)
</TABLE>

         Commissions for (***) through (***) shall be calculated on a (***)
         basis, beginning on the Effective Date and continuing through (***).
         (***) payments by SI shall not have (***) the Net SI commissions. As
         an illustrative example, if Net SI Commissions from Qualified Bookings
         are (***) in August 1997, (***) in September 1997, (***) in October
         1997 and (***) in November 1997, SI would make the following payments
         to Yahoo!: (1) (***) for the (***); and (2) (***) for the (***).

F-2      Commissions for (***):

<TABLE>
<CAPTION>

         Net SI Commission                     Commission to Yahoo!
         -----------------                     --------------------
<S>                                            <C>
         (***)                                 (***)
         (***)                                 (***)
</TABLE>

         Commissions for (***) through (***) shall be calculated on a
         cumulative basis, beginning on (***) and continuing through (***).
         (***) payments by SI shall not have (***) the Net SI Commission.

F-3      Commissions for (***):

<TABLE>
<CAPTION>

         Net SI Commission                     Commission to Yahoo!
         -----------------                     --------------------
<S>                                            <C>
         (***)                                 (***)
         (***)                                 (***)
</TABLE>

         Commissions for (***) through (***) shall be calculated on a (***)
         basis, beginning on (***) and continuing through (***). (***)payments
         by SI shall not have (***) the Net SI Commission.

                                      -22-
<PAGE>   24

Note: Redacted portions have been marked with (***). The redacted portions are
subject to a request for confidential treatment that has been filed with the
Securities and Exchange Commission.

                                   EXHIBIT G

             STATISTICAL INFORMATION AND COMMISSION TRACKING REPORTS
 (unless otherwise noted, all information shall be calculated on a (***) basis)

Page Views
o    By day, by month
o    By segment of the site (air v. hotel v. car v. other), by page

Yahoo! Users
o    Unique Yahoo! User sessions per day, per month
o    New accounts per day, per month
o    Yahoo! Users that purchase per day, per month
o    Repeat purchasers per day, per month

Financial Performance

o    Air Transactions (per day, per month, per service provider)
     o    Number of transactions completed
     o    Number of reservations placed
     o    Conversion of reservations to transactions over preceding 24 hours
     o    Number of tickets sold
     o    Gross revenue from sale of tickets

o    Hotel Transactions (per day, per month, per service provider)
     o    Number of reservations completed, per month

o    Car Transactions (per day, per month, per service provider)
     o    Number of reservations completed, per month

Customer Service Performance
o    Email
     o    Number of e-mails received
     o    Number of e-mails responded to
     o    Percent e-mails receiving a response within (***) of such e-mail's
          receipt
     o    Primary subject of e-mails

o    Phone

     o    Number of calls received

     o    Number of calls answered

     o    Average hold time for all calls

o    System Performance

     o    The percentage amount of time that SI's service is not functionally
          operable

     o    The average system response time for Yahoo! User queries (i.e. the
          time between the receipt of a query over the internet to the posting
          of a response on the internet)

                                      -23-
<PAGE>   25

Note: Redacted portions have been marked with (***). The redacted portions are
subject to a request for confidential treatment that has been filed with the
Securities and Exchange Commission.

o    Fulfillment:

     o    Date upon which each order is received and date upon which each
          corresponding ticket is shipped or fulfilled

     o    To the extent collected by SI, the percentage of orders that are
          shipped or fulfilled by: electronic ticket, U.S. mail and express mail

                                      -24-
<PAGE>   26

Note: Redacted portions have been marked with (***). The redacted portions are
subject to a request for confidential treatment that has been filed with the
Securities and Exchange Commission.

                                    EXHIBIT H

         The following formulae shall be used by the parties for computing the
adjustment to SI's payment obligations in the event Yahoo! (***) pursuant to
Section 21(a)(8). Provided, however, that under no circumstances shall SI's
payment obligations be less than (***) per (***), or less than (***) per (***).

         TSBD (Ticket Sales Before (***)) = SI's total ticket sales generated
         from the Co-Branded Pages for the (***) prior to Yahoo!'s (***).

         TSAD (Ticket Sales At (***)) = SI's total ticket sales generated from
         the Co-Branded Pages for the (***) in which Yahoo! (***).

         TSPD (Ticket Sales Post (***)) = SI's total ticket sales generated
         from the Co-Branded Pages for (***) after the (***) in which Yahoo!
         (***).

1.       1998 Payments

         A.       For the (***) in 1998 in which Yahoo! (***):

                          (***)

                  For example, if SI had (***) total ticket sales generated
                  from the Co-Branded Pages for October 1998, and after (***),
                  SI's total ticket sales for November 1998 are (***), SI's
                  November 1998 payment obligation would be (***). (***)

         B.       For each (***) in 1998 after the (***) in which Yahoo! (***):

                           (***)

                  For example, if SI had (***) total ticket sales generated
                  from the Co-Branded Pages for October 1998, and after Yahoo!
                  (***) in November 1998, SI's total ticket sales for December
                  1998 are (***), SI's December 1998 payment obligation would
                  be (***), due to the application of (***) specified in the
                  first paragraph of this Exhibit H. If (***) did not exist,
                  the payment would be (***). (***)

2.       1999 Payments

         A.       For the (***) in 1999 in which Yahoo! (***):

                          (***)

                                      -25-
<PAGE>   27

Note: Redacted portions have been marked with (***). The redacted portions are
subject to a request for confidential treatment that has been filed with the
Securities and Exchange Commission.

                  For example, if SI had (***) total ticket sales generated
                  from the Co-Branded Pages for January 1999, and after Yahoo!
                  (***) in February 1999, SI's total ticket sales for February
                  1999 are (***), SI's February 1999 payment obligation would
                  be (***). (***)

         B.       For each (***) after the (***) in which Yahoo! (***):

                           (***)

                  For example, if SI had (***) total ticket sales generated
                  from the Co-Branded Pages for January 1999, and after Yahoo!
                  (***) in February 1999, SI's total ticket sales for March
                  1999 are (***), SI's March 1999 payment obligation would be
                  (***), due to the application of (***) specified in the first
                  paragraph of this Exhibit H. If (***)did not exist, the
                  payment would be (***). (***)

3.       2000 Payments

                  In the event that this Agreement remains in effect and Yahoo!
                  (***) in the Year 2000, the parties shall (***) to SI's
                  monthly payments as determined by the parties in accordance
                  with the terms of this Agreement.

                                      -26-<PAGE>   1
                                                                  EXHIBIT 10.16

Note: Redacted portions have been marked with (***). The redacted portions are
subject to a request for confidential treatment that has been filed with the
Securities and Exchange Commission.

                               SECOND AMENDMENT TO
               TRAVEL SERVICES ADVERTISING AND PROMOTION AGREEMENT

         This SECOND AMENDMENT TO THE TRAVEL SERVICES ADVERTISING AND PROMOTION
AGREEMENT (the `Second Amendment') dated as of October 1, 1999 (the "Second
Amendment Effective Date") is made and entered into between Yahoo! Inc, a
Delaware corporation ("Yahoo!") and SABRE Interactive ("SI"), a division of
Sabre Inc. (formerly, The SABRE Group, Inc.), a Delaware corporation. Yahoo! and
SI may be referred to individually as a "Party" and collectively as the
"Parties."

                                    RECITALS

A.       Yahoo! and SI entered into the Travel Services Advertising and
Promotion Agreement, dated as of June 30, 1997 (the "Agreement"); and

B.   The Agreement was mended by the Parties pursuant to the First Amendment to
Travel Services Advertising and Promotion Agreement dated November, 1998 (the
"First Amendment"); and

C.   The Parties desire to make various changes to the Agreement, including,
without limitation, extending the Term of the Agreement for an additional two
years, and the Parties are entering into this Amendment to document such
changes to the Agreement.

                                    AGREEMENT

         In consideration of the foregoing and for other good and valuable
consideration, the receipt and adequacy of which are hereby acknowledged, the
Parties agree to amend the Agreement as set forth below:

SECTION 1.        DEFINITIONS.

1.1  Defined Terms. Terms used in this Second Amendment but not defined herein
shall have the meaning given them in the Agreement and First Amendment.

SECTION 2.        AMENDMENTS.

2.2      The Agreement is hereby amended as follows:

         (a)      Section 1.2 is deleted in its entirety and replaced with the
                  following:

                  "1.2     `Exclusivity Period' means (***) through (***)."

         (b)      Section 1.6 is deleted in its entirety and replaced with the
                  following:

<PAGE>   2

Note: Redacted portions have been marked with (***). The redacted portions are
subject to a request for confidential treatment that has been filed with the
Securities and Exchange Commission.

                  "1.6 `Yahoo! Travel Page' means the first page located in the
                  travel category on the Yahoo! Site, currently located at
                  http://travel.yahoo.com/travel. A screen image of the Yahoo!
                  Travel Page is attached to this Agreement in Exhibit A.

         (c)      Section 4.3 is deleted in its entirety and replaced with the
                  following:

                  "(a) By Yahoo!. Yahoo! shall not display any banner
                  advertisements or other promotional materials on the
                  Co-Branded Pages or the Yahoo! Travel Page for any of the
                  following (***). SI may add additional third parties that
                  (***) to the above lists of (***) and (***) upon giving (***)
                  written notice to Yahoo!; provided that Yahoo! shall be
                  permitted to (***) to any such third party provided that such
                  obligation exists (or would cause Yahoo! to (***) if revoked)
                  as of the date of such notice. It is expressly understood that
                  for the purposes of this Section 4.3(a), third parties that
                  (***) (such as airline, hotel or car rental provider), shall
                  not be considered (***) and Yahoo may provide such third
                  parties advertising services. If the parties do not execute
                  insertion orders for the Advertising Rights SI is obligated to
                  purchase pursuant to Section 5.1 as set forth therein, then,
                  as a non-exclusive remedy, (***). Further, notwithstanding
                  anything to the contrary in this Agreement, under no
                  circumstances shall Yahoo! be restricted from promoting any
                  entity (including, but not limited to, (***)) through (***) on
                  the Yahoo! site.

         (d)      Section 5.1 of the Agreement shall be amended by replacing the
                  third and fourth sentences of the first paragraph with the
                  following:

                  "SI will execute Yahoo! insertion orders for Advertising
                  Rights on the Yahoo! Site, based on available inventory, as
                  follows: (i) on or before (***), SI will place an insertion
                  order for (***) for Advertising Rights to be delivered during
                  (***); (ii) on or before (***), SI will place an insertion
                  order for (***) for Advertising Rights to be delivered during
                  (***); and (iii) on or before (***) SI will place an insertion
                  order for (***), for Advertising Rights to be delivered during
                  (***). All such advertisements shall be subject to Yahoo!'s
                  standard terms and conditions as set forth in Exhibit D and
                  Yahoo's standard policies concerning the collection of user
                  data, any of which Yahoo! may modify from time to time in its
                  reasonable discretion upon written notice to SI. In the event
                  of any conflict between the provisions of this Agreement and
                  such standard terms and conditions or any advertising
                  insertion order, (***)."

         (e)      Section 6.3 of the Agreement shall be replaced in its
                  entirety with the following:

                                      -2-
<PAGE>   3

Note: Redacted portions have been marked with (***). The redacted portions are
subject to a request for confidential treatment that has been filed with the
Securities and Exchange Commission.

                  "Tracking Procedures; Audit Rights. To ensure compliance with
                  the terms of Section 6.1 and 6.2, SI shall establish
                  reasonable mechanisms acceptable to Yahoo! to track, and shall
                  keep reasonably detailed records concerning, Qualified
                  Bookings and the payments due Yahoo! under this Agreement. SI
                  shall provide Yahoo!, within ten (10) days following the end
                  of each month, a report continuing the information set forth
                  in Exhibit G, and such other information related to commission
                  s and payments due and compliance with performance
                  specifications set forth in Exhibits B, E and F under this
                  Agreement as Yahoo! may reasonably request from time to time.
                  Yahoo shall have the right, no more than twice a year and at
                  its own expense, to have a representative inspect and audit
                  all of the accounting and sales books and records of SI which
                  are relevant to the payments set out in Sections 6.1 and 6.2,
                  provided, however, that Yahoo! provides SI with reasonable
                  notice prior to such audit and any such inspection and audit
                  shall be conducted during regular business hours in such a
                  manner as not to interfere with normal business activities. In
                  the event that any audit shall reveal an underpayment of more
                  than five percent (5%) of the amounts due to Yahoo! for any
                  Calendar quarter of the Term, SI shall immediately pay the
                  amount owed with reasonable interest and reimburse Yahoo! for
                  the cost of such audit. Within forty-five (45) after the end
                  of each calendar year of the Term, SI shall furnish Yahoo! a
                  cumulative report, that has been reviewed and certified as
                  accurate by SI's Chief Financial Officer (or an SI officer
                  with similar responsibilities) describing in reasonable detail
                  the calculation of all fees, commissions and payments due to
                  Yahoo! under this Agreement during such year then ended."

         (f)      Section 11.1 is deleted in its entirety and replaced with the
                  following:

                  "11.1 Term. This Agreement shall commence upon the Effective
                  Date and continue through December 31, 2002 unless terminated
                  earlier in accordance with Section 11.2 (the "Term").

         (g)      Section 12.6 of the Agreement shall be deleted in its
                  entirety and replaced with the following:

                  "12.6 Successors and Assigns. Neither party shall assign its
                  rights or obligations under this Agreement without the prior
                  written consent of the other party, which shall not be
                  unreasonably withheld. Notwithstanding the foregoing, upon
                  written notice to Yahoo! SI shall have the right to assign
                  this Agreement to an affiliate in which SI owns a majority
                  interest or indirectly (e.g., through a holding company)
                  controls. Further, either party may assign this Agreement to
                  an entity who acquires substantially all of the stock or
                  assets of a party to this Agreement; provided that consent
                  will be required in the event that the non-assigning party

                                       -3-
<PAGE>   4

Note: Redacted portions have been marked with (***). The redacted portions are
subject to a request for confidential treatment that has been filed with the
Securities and Exchange Commission.

                  determines that the assignee will not have sufficient capital
                  or assets to perform its obligations hereunder, or that the
                  assignee is a direct competitor of the non-assigning party;'
                  provided that, such consent may not be unreasonably withheld
                  or delayed.

         (h)      Exhibit E of the Agreement is deleted in its entirety and
                  replaced with "Exhibit E" as attached to this Second
                  Amendment.

         (i)      Exhibit F of the Agreement is deleted in its entirety and
                  replaced with "Exhibit F" as attached to this Second
                  Amendment.

         (j)      Exhibit H, Section 3 shall be deleted in its entirety and
                  replaced with the following:

                  "3       2000-2002 Payments

                           In the event that this Agreement remains in effect
                  and Yahoo (***) in the year 2000 through 2002, the parties
                  shall apply the above formulae, in a consistent manner, to
                  SI's monthly payments as determined by the parties in
                  accordance with the terms of this Agreement."

                            [signature page follows]

                                      -4-
<PAGE>   5

Note: Redacted portions have been marked with (***). The redacted portions are
subject to a request for confidential treatment that has been filed with the
Securities and Exchange Commission.

         IN WITNESS WHEREOF, the Parties have each caused this Second Amendment
         to be signed and delivered by its duly authorized officers, all as of
         the Second Amendment Effective Date.

YAHOO! INC.                         SABRE INTERACTIVE, a division of Sabre Inc.

By: /s/ Ellen F. Siminoff           By: /s/ Terrell Jones
    ------------------------          -----------------------------------------
Name: Ellen F. Siminoff             Name: Terrell Jones
     -----------------------             --------------------------------------
Title: V.P.                         Title: President, Travelocity.com
      ----------------------              -------------------------------------

                                      -5-
<PAGE>   6

Note: Redacted portions have been marked with (***). The redacted portions are
subject to a request for confidential treatment that has been filed with the
Securities and Exchange Commission.

                                    EXHIBIT E

                                    PAYMENTS
<TABLE>
<CAPTION>
Month                                         Fee                                   Payment Due Date
-----                                         -------                               -----------------------------
<S>                                           <C>                                   <C>
(***)                                         $ (***)                               (***)
(***)                                         $ (***)                               (***)
(***)                                         $ (***)                               (***)
(***)                                         $ (***)                               (***)
(***)                                         $ (***)                               (***)
(***)                                         $ (***)                               (***)
(***)                                         $ (***)                               On or before the (***) of each
                                                                                    applicable(***)
(***)                                         $ (***)                               On or before the (***)of each
                                                                                    applicable (***)
(***)                                         $ (***)                               On or before the (***) of each
                                                                                    applicable (***)
(***)                                         $ (***)                               On or before the (***) of each
                                                                                    applicable (***)
(***)                                         $ (***)                               On or before the (***) of each
                                                                                    applicable (***)
</TABLE>

For the period running from (***) through (***) and (***), in addition to the
amounts provided above and elsewhere in this Agreement, SI will pay Yahoo!
additional fees for Qualified Bookings as set forth below:

<TABLE>
<CAPTION>
Number of Qualified Bookings                        2001                              2002
----------------------------                        ----                              ----
<S>                                                 <C>                               <C>
(***)                                               (***)                             (***)
(***)                                               (***)                             (***)
(***)                                               (***)                             (***)
(***)                                               (***)                             (***)
(***)                                               (***)                             (***)
(***)                                               (***)                             (***)
(***)                                               (***)                             (***)
(***)                                               (***)                             (***)
(***)                                               (***)                             (***)
</TABLE>

The additional fees set forth above shall be paid within (***) of the (***) in
which the Qualified Bookings thresholds are achieved as identified above. The
number of Qualified Bookings achieved shall (***) (e.g, during the year 2001, SI
shall pay Yahoo!: (i) (***) within (***) following the end of the (***) in which
the (***) Qualified Booking threshold is reached, and (ii) an additional (***)
(for a total of (***)) within (***) following the end of the (***) in which the
(***) additional Qualified Bookings are achieved (for a total of (***) Qualified
Bookings), etc.

                                      -6-
<PAGE>   7

Note: Redacted portions have been marked with (***). The redacted portions are
subject to a request for confidential treatment that has been filed with the
Securities and Exchange Commission.

                                    EXHIBIT F

                                   COMMISSIONS

F-1      Commissions for (***):

<TABLE>
<CAPTION>
         Net SI Commission                     Commission to Yahoo!
         -----------------                     --------------------
         <S>                                   <C>
         (***)                                 (***)
         (***)                                 (***)
         (***)                                 (***)
</TABLE>

         Commissions for (***) through (***) shall be calculated on a (***)
         basis, beginning on the Effective Date and continuing through (***).
         (***) payments by SI shall not (***) the Net SI commissions. As an
         illustrative example, if Net SI Commissions from Qualified Bookings are
         (***) in August 1997, (***) in September 1997, (***) in October 1997
         and (***) in November 1997, SI would make the following payments to
         Yahoo!: (1) (***) for the (***) ending (***); and (2) (***) for the
         (***) ending (***).

F-2      Commissions for (***):
<TABLE>
<CAPTION>
         Net SI Commission                     Commission to Yahoo!
         -----------------                     --------------------
         <S>                                   <C>
         (***)                                 (***)
         (***)                                 (***)
</TABLE>

         Commissions for (***) through (***) shall be calculated on a (***)
         basis, beginning on (***) and continuing through (***). (***) payments
         by SI shall not (***) the Net SI Commission.

F-3      Commissions for (***):
<TABLE>
<CAPTION>
         Net SI Commission                     Commission to Yahoo!
         -----------------                     --------------------
         <S>                                   <C>
         (***)                                 (***)
         (***)                                 (***)
</TABLE>

         Commissions for (***) through (***) shall be calculated on a (***)
         basis, beginning on (***) and continuing through (***). (***) payments
         by SI shall not (***) the Net SI Commission.

                                      -7-

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