Document:

EX-10.50

 Exhibit 10.50 

Amendment 15 to 

Worldspan Asset Management Offering Agreement 

This amendment is the fifteenth amendment (“Amendment 15”) to the Asset Management Offering Agreement effective as of July 1, 2002, among
Travelport, LP (formerly Worldspan L.P.) (“Travelport”), International Business Machines Corporation (“IBM”), and IBM Credit LLC (“IBM Credit”), Agreement ASVB594, as previously amended by Amendment 1 effective as
of December 16, 2002, Amendment 2 effective as of December 31, 2003, Amendment 3 effective as of June 30, 2006, Amendment 4 effective as of January 1, 2007, Amendment 5 effective as of February 1, 2007,
Amendment 6 effective as of October 1, 2007, Amendment 7 effective as of October 1, 2007, Amendment 8 effective as of October 1, 2007, Amendment 9 effective as of October 1, 2007, Amendment 10 effective
as of March 31, 2009, Amendment 11 effective as of March 31, 2010, Amendment 12 effective as of December 17, 2010, Amendment 13 effective as of December 23, 2011, and Amendment 14 effective as of
November 21, 2012 (collectively, the “AMO Agreement”). 
 Each term defined in the AMO Agreement shall have the same meaning in this
Amendment 15 unless otherwise provided herein or inconsistent with the content hereof. 
 The purposes of this Amendment 15 are to replace, modify, or add
certain terms in the AMO Agreement with the terms specified in this Amendment 15. 
 This Amendment 15 becomes effective as of January 1, 2013 (the
“Effective Date of Amendment 15”). 
 This Amendment 15 may be signed in one or more counterparts, each of which will be deemed to be an original
and all of which when taken together will constitute the same agreement. Any copy of this Amendment 15 made by reliable means is considered an original. 

Travelport, IBM and IBM Credit hereby agree that, as of the Effective Date of Amendment 15, the AMO Agreement shall be amended as follows: 

 

	 	1.	Capacity Utilization Reporting. The seventh paragraph of subsection (4), entitled “Capacity Utilization Reporting”, of Section 6 of the AMO Agreement is hereby amended in its entirety to read
as follows: 

 “The Capacity Utilization Report for each month must report the Daily Airline Hosting MIPS for the day on
which the highest TPF Adjusted Peak Capacity Usage for that month occurred. This Daily Airline Hosting MIPS will be considered the highest daily usage of Airline Hosting MIPS reported in the Airline Hosting Capacity Utilization Report for that month
for purposes of the definition of “Annual Airline Hosting MIPS Usage” in the ESO Agreement.” 
  

	 	2.	Maintenance Services. Section 12 of the AMO Agreement, entitled “Maintenance Services”, is hereby amended in its entirety to read as follows: 

“12. Maintenance Services 

During the term of this AMO Agreement and for the Monthly Payments specified herein, IBM will provide Maintenance Services for the Machines
specified in Exhibit B and in Sections 1 and 2 of Exhibit C. The terms governing these Maintenance Services are contained in the IBM Master Services Attachment for Service Elite, Attachment number MAB7X7W, currently in effect between IBM and
Travelport or any follow-on agreement that may subsequently be agreed-to that applies to these types of Machines. Additional terms specific to this AMO Agreement are contained in Exhibit H to this AMO Agreement. 

The charges for the Maintenance Services will not be changed during the term of this AMO Agreement, except as expressly provided herein.
Travelport may (1) upon thirty (30) days’ prior written notice to IBM, delete Machines from Maintenance Services under this AMO Agreement, or (2) with prior written 

  
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notice to IBM, add Machines to Maintenance Services under this AMO Agreement. IBM will perform a periodic reconciliation of any such changes (additions or deletions) and the subsequent Monthly
Payments will be adjusted to reflect the applicable amounts (increases or decreases) for each applicable month as confirmed by the Parties in an Order Letter.” 
  

	 	3.	Machine Maintenance Services. Exhibit H (Machine Maintenance Services) to the AMO Agreement is hereby amended as follows: 

(a) Section 3) thereof is amended in its entirety to read as follows: 

“3) Start of Maintenance Services 

When Travelport orders Maintenance Services for a Machine under the AMO Agreement, the Maintenance Services will start on the date designated
by Travelport upon reasonable prior written notice to IBM. IBM may inspect the Machine within one month following the order and if IBM determines that the Machine is not in an acceptable condition for Maintenance Services, Travelport may either
(i) have IBM restore the Machine for a charge, or (ii) withdraw its request for Maintenance Services for the Machine. However, Travelport will be charged for any Maintenance Services that IBM has performed at Travelport’s request.

 Upon such start of Maintenance Services for a Machine, IBM will increase the Monthly Payment by an amount equal to the amount IBM is then
charging Travelport for Maintenance Services for comparable Machines under the AMO Agreement. IBM will disclose this amount to Travelport at the time Travelport requests Maintenance Services for the Machine, and IBM’s AMO Agreement Executive or
equivalent will certify the accuracy of the amount. If IBM is not then providing Maintenance Services for comparable Machines under the AMO Agreement, then IBM will increase the Monthly Payment by an amount determined in accordance with any other
agreements that may then be in effect between IBM and the Travelport Enterprise. 
 (b) Section 4) thereof is amended in its entirety to
read as follows: 
 “4) Termination of Maintenance Services 

Maintenance Services for each Machine will terminate on the earlier of: 

 

	 	(i)	the date designated by Travelport upon at least thirty (30) days’ prior written notice to IBM; 

Upon such termination of Maintenance Services for a Machine, IBM will reduce the Monthly Payment by an amount equal to the amount IBM is then
charging Travelport for Maintenance Service for that Machine under the AMO Agreement. IBM will disclose this amount to Travelport at the time Travelport notifies IBM of the termination of Maintenance Services for the Machine, and IBM’s AMO
Agreement Executive or equivalent will certify the accuracy of the amount. 
 (ii) the Return Date or Maintenance Termination Date for the
Machine as shown in Exhibit B or C.” 
  

	 	4.	Continued Effect. Except for the changes specified in this Amendment 15, all other terms and conditions of the AMO Agreement remain unmodified. 

 

	 	5.	Entire Agreement. The Parties agree that this Amendment 15 is the complete agreement between the Parties with respect to the subject matter hereof and replaces any prior oral and/or written communications between
the Parties concerning this subject matter. By signing below, the Parties agree to the terms of this Amendment 15. If there is a conflict between the terms of this Amendment 15 and the terms of an Included Agreement, the terms of this Amendment
15 will prevail. 

  
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	 Agreed to:

Travelport, LP by Travelport Holdings, LLC, its

General Partner
	 		 	
					
	By:	 	 /s/ Graham G. Phillips, Jr.
	 		 		 	
		 	Authorized Signature	 		 		 	

									
	Name (type or print):  	 	 Graham G. Phillips, Jr.
	 		 		 	

									
	  
 Date:  
	 	 30 September 2013
	 		 		 	

									
	  
 Jurisdiction of Organization: Delaware
	 		 		 	
		 		 		 		 	

  

									
	 Agreed to:

International Business Machines Corporation
	 		 	 Agreed to:
 IBM
Credit LLC

					
	By:  	 	 /s/ Patti Feeney
	 		 	By:  	 	 /s/ Gordon A. Terranova

		 	Authorized Signature	 		 		 	Authorized Signature

									
	  
 Name (type or print):  
	 	 Patti Feeney
	 		 	Name (type or print):  	 	 Gordon A. Terranova

									
	  
 Date:  
	 	 09/30/2013
	 		 	Date:  	 	 October 15, 2013

  

	
	 Customer No.: 9885094

	
	 AMO Agreement No.: ASVB594

	
	 IBM Customer Agreement No.: JJT-0003

	
	 Term Lease Agreement No.: JJT-0001

  
 Page 3 of 3EX-10.51

 Exhibit 10.51 

PORTIONS OF THIS EXHIBIT MARKED BY AN (***) HAVE BEEN OMITTED PURSUANT TO A 

REQUEST FOR CONFIDENTIAL TREATMENT FILED SEPARATELY WITH THE SECURITIES AND 

EXCHANGE COMMISSION 

Amendment 16 to 

Worldspan Asset Management Offering Agreement 

This amendment is the sixteenth amendment (“Amendment 16”) to the Asset Management Offering Agreement effective as of July 1, 2002, among
Travelport, LP (formerly known as Worldspan L.P.) (“Travelport”), International Business Machines Corporation (“IBM”), and IBM Credit LLC (“IBM Credit”), Agreement No. ASVB594, as previously amended by Amendment 1
effective as of December 16, 2002, Amendment 2 effective as of December 31, 2003, Amendment 3 effective as of June 30, 2006, Amendment 4 effective as of January 1, 2007, Amendment 5 effective as of
February 1, 2007, Amendment 6 effective as of October 1, 2007, Amendment 7 effective as of October 1, 2007, Amendment 8 effective as of October 1, 2007, Amendment 9 effective as of October 1, 2007,
Amendment 10 effective as of March 31, 2009, Amendment 11 effective as of March 31, 2010, Amendment 12 effective as of December 17, 2010, Amendment 13 effective as of December 23, 2011, Amendment 14
effective as of November 21, 2012, and Amendment 15 effective as of January 1, 2013 (collectively, the “AMO Agreement”). 
 Each term
defined in the AMO Agreement shall have the same meaning in this Amendment 16 unless otherwise provided herein or inconsistent with the content hereof. 

The purposes of this Amendment 16 are to replace, modify, or add certain terms in the AMO Agreement with the terms specified in this Amendment 16. 

This Amendment 16 becomes effective as of December 30, 2013 (the “Effective Date of Amendment 16”). 

This Amendment 16 may be signed in one or more counterparts, each of which will be deemed to be an original and all of which when taken together will
constitute the same agreement. Any copy of this Amendment 16 made by reliable means is considered an original. 
 Travelport, IBM and IBM Credit hereby
agree that, as of the Effective Date of Amendment 16, the AMO Agreement shall be amended as follows: 
  

	 	1.	Special Offering Attachment for * * * Exhibit. Exhibit N (Special Offering Attachment for * * *) to the AMO Agreement is replaced in its entirety with the Exhibit N attached as Attachment 1 to this
Amendment 16. 

  

	 	2.	TPF Capacity. In Section 6 of the AMO Agreement, entitled “TPF Capacity”, subsection (1) entitled “Definitions”, replace the “* * * Capacity” definition in its entirety
with the following: 

 “* * * Capacity” is a subset of TPF Fixed Capacity and is the number of MIPS of the TPF Fixed
Capacity that may be used for * * * Systems. * * * Capacity is limited to * * * running on an IBM * * * Machine (* * *) and * * * running on another IBM * * * Machine (* * *), for an aggregate total of * * * of * * * Capacity. The TPF operating
system may be run as a guest of * * * under the provisions of this paragraph.” 
 [THE REMAINDER OF THIS PAGE IS INTENTIONALLY LEFT
BLANK.] 

  
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	 	3.	TPF Capacity. In Section 6 of the AMO Agreement, entitled “TPF Capacity”, subsection (3) entitled “General”, replace Table A in its entirety with the following: 

* * * 
 Note: The Machine
capacity designated as available for * * * Systems shown in the table above does not include capacity used for * * * Systems on Integrated Facility for Linux (“IFL”) or Integrated Coupling Facilities (“ICF”).” 

 

	 	4.	In Section 53 to the AMO Agreement, entitled “Option to Acquire * * * or Then-Current Technology”, replace Table B in its entirety with the following: 

Table B 
 * * *

  

	 	5.	Delete Section 54 “Acquisition of Future MIPS on IBM System * * * or Then Currently Available Technology” in its entirety. 

 

	 	6.	Continued Effect. Except for the changes specified in this Amendment 16, all other terms and conditions of the AMO Agreement remain unmodified. 

 

	 	7.	Entire Agreement. The Parties agree that this Amendment 16 is the complete agreement between the Parties with respect to the subject matter hereof and replaces any prior oral and/or written communications between
the Parties concerning this subject matter. By signing below, the Parties agree to the terms of this Amendment 16. If there is a conflict between the terms of this Amendment 16 and the terms of an Included Agreement, this Amendment 16 prevails.

  

			
	 Agreed to:

Travelport, LP by Travelport Holdings, LLC, its General Partner

			
		
	By:  	 	/s/ Jimmy McCullough

			
	 Authorized Signature

			
		
	Name (type or print):  	 	Jimmy McCullough

			
	  
 Title:  
	 	 Group Vice President

	  
 Date:  
	 	 12/30/13

	Jurisdiction of Organization: Delaware

  
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	 Agreed to:

International Business Machines Corporation
	 		 	 Agreed to:
 IBM
Credit LLC

					
	By:  	 	 /s/ Patti Feeney
	 		 	By:  	 	 /s/ Gordon A. Terranova

		 	Authorized Signature	 		 		 	Authorized Signature

									
					
	 Name (type or print):  
	 	 Patti Feeney
	 		 	 Name (type or print):  
	 	 Gordon A. Terranova

									
					
	Title:  	 	 010 Proj. Exec.
	 		 	Title:  	 	 Business Unit Executive, IGF

									
					
	 Date:  
	 	 12/30/2013
	 		 	 Date:  
	 	 12/30/2013

 Customer No.: 9885094 

AMO Agreement No.: ASVB594 
 IBM Customer Agreement No.:
JJT-0003 
 Term Lease Agreement No.: JJT-0001 

  
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 Attachment 1 

Exhibit N 
 Revised
Special Offering Attachment for * * * on IBM * * * Machines 
 

 Customer Agreement 
 Special Offering Attachment for * * * 

 
 This Revised Special Offering Attachment for * * * on
IBM * * * Machines (this “Attachment”) are in addition to those of the IBM Customer Agreement, Agreement Number JJT-0003 (“ICA”), and the IBM International Program License Agreement (“IPLA”) in effect between IBM and
Travelport. Travelport accepts the terms of this Attachment by signing Amendment 16 to the Parties’ AMO Agreement. This Attachment is Exhibit N to the AMO Agreement and as of the Effective Date of Amendment 16 replaces the prior existing
Exhibit N. 
  

	1.	Definitions 

  

			
	 LPAR
	  	 Logical partitions in which an IBM Program runs.

		
	MSUs	  	Millions of Service Units per hour. Units of workload capacity of an Eligible Machine.

  

	2.	Eligible Programs 

 The following Programs are eligible for the special pricing described
in this Attachment (collectively, the “Eligible Programs”): 
 A. * * * OTC: 

* * * 
 The Programs listed
above are one-time-charge Programs licensed under the terms of the IPLA (collectively, the “* * * OTC Programs”). The subscription and support (“Software Maintenance”) for such * * * OTC Programs is provided under the terms of
the IBM Agreement for the Acquisition of Software Maintenance (“IAASM”). 
 * * * Restricted Use License (RUL) – Dynamic
I/O Configuration Support of TPF: 
 Travelport may use * * * (and version upgrades) in association with its licensed use of * *
* or * * * to provide operational support for TPF. * * * function is limited to * * * of TPF workloads in the defined LPAR(s) aligned to the size of an engine(s). Any other use, specifically doing general development support or running CMS guests
for test partitions is not permitted without a full separate * * * license for every CPU applicable. Travelport must maintain * * * (RUL) license entitlement for the IFL or GP engines used in support of this function. 

This RUL for * * * applies to the following Travelport environments/LPARS: 

 

	 	•	 	* * * 

  

	 	•	 	* * * 

  

	 	•	 	* * * 

  
 Page 4 of 6 

	 	•	 	* * * 

 B. * * *: 

* * * 
 The Programs listed above
are monthly license charge Programs licensed under the terms of the ICA (collectively, the “* * * MLC Programs”). The Software Maintenance for such * * * MLC Programs is provided under the IAASM. 

Travelport represents that all of the Eligible Programs described above will be run on shared LPARs on the following Machines up to the
following MSUs: 
 * * * 
  

	3.	Charges 

 As long as the following conditions are met, IBM agrees to charge Travelport
only for the capacity on which the Eligible Programs are running: 
  

	 	•	 	The Eligible Programs and any TPF guest workload must reside in a * * * provided that the LPAR(s) align * * *; 

  

	 	•	 	Travelport has and must continue to license * * *, (* * * and version upgrades), to the number of shared * * * engine(s); 

  

	 	•	 	* * * MLC Program licensing and charging is at the MSU capacity of the engine(s) in the LPAR(s) shown above; 

  

	 	•	 	VSE and z/OS guest workloads are not allowed in the shared LPAR(s); 

  

	 	•	 	All Eligible Machines must provide Call Home data of the * * * LPAR(s) size annually; and 

  

	 	•	 	If * * * LPAR exceeds the * * * as set forth in the table above, Travelport must notify IBM and the Parties will review the terms, conditions and pricing described in this Attachment and make adjustments thereto.

  

	4.	Travelport’s Responsibilities 

 Travelport agrees to: 

 

	 	(1)	promptly install any enabling code for IBM Programs or IBM * * * Licensed Internal Code (“LIC”), if any, required for the pricing described in this Attachment; 

 

	 	(2)	notify IBM if Travelport elects to convert from the pricing described in this Attachment to another form that is generally available to Travelport: 

 

	 	(3)	configure your Machine to send Transmit System Availability Data (TSAD) weekly to IBM via the Remote Support Facility (RSF). This enables IBM to verify that the product LPAR utilization capacity MSUs are consistent with
Travelport’s actual Machine configuration. Failure to submit TSAD may result in IBM * * * MLC Programs being charged on a Full Capacity MSU basis; and 

  

	 	(4)	assign a person in Travelport’s organization with authority to discuss and promptly resolve any questions or inconsistencies concerning * * * OTC or * * * MLC * * *, current license entitlement, and configuration
data reported via the RSF for the Machines running * * *. 

  
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	5.	General 

 By accepting the terms of this Attachment, Travelport agrees to allow IBM to
audit Travelport’s compliance with the terms of this Attachment upon reasonable prior notice to Travelport from IBM. Travelport understands that IBM may use information IBM has about the Travelport Enterprise’s system in IBM’s audit
activities and Travelport agrees to provide IBM with machine access and/or copies of system tools outputs and/or other system information as appropriate to conduct such audits. 

In the event that IBM makes generally available a * * * offering supported under * * * or makes * * * support available in * * * on terms
that are as favorable to Travelport as the terms of this Attachment, then Travelport shall act in good faith in using such * * * offering and/or * * * in lieu of the provisions of this Attachment and, to the extent that Travelport is so using such
capabilities, this Attachment shall terminate. Otherwise, this Attachment shall be valid through the termination or expiration of the AMO Agreement. The terms in this Attachment are IBM Confidential. 

*** End of Attachment 1, Exhibit N *** 

  
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