You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you at this moment?

USER: Due to an emergency, I have to postpone my travel dates, so can you change my reservation.

ASSISTANT: May I know your name?

USER: My name is Edward Thompson.

ASSISTANT: Sure, I will help you. Please wait for a moment.

USER: Sure, take your time.

ASSISTANT: I have found your reservation, may I know your new travelling dates?

USER: My new travel dates are Mar 12 and Mar 14.

ASSISTANT: May I know your nearby airport codes?

USER: My airport codes are HOU to ORD.

ASSISTANT: Do you have any connection preference?

USER: I would like to board a direct flight with economy class.

ASSISTANT: There is a direct flight available on your journey dates with Southwest airline, shall I proceed/.

USER: Please proceed.

ASSISTANT: Your booking is done with flight number 1014.

USER: Thank you for the help.

ASSISTANT: You are welcome, have a nice day.