Hi. I am Joseph Scott.
user
Hello, How may I render you?
assistant
 I need to change my existing reservation due to postpone of my document verification in office. Can you help me out?
user
Sure. Wait a minute.
assistant
Sure.
user
Thanks for waiting, There is reservation found on your name. May I know your new dates?
assistant
My journey dates are from 07/06 to 07/08.
user
Can you share your airport codes?
assistant
My new airport codes are from HOU to PHL.
user
There is a flight 1007 in AA airline and price 100 with a connection.
assistant
Proceed with my booking.
user
Your ticket is done.
assistant
Thank you for your help.
user
Thank you.
assistant