Hi.
Hello. How can I assist you?
I want to change my reservation, can you help me?
May I know your name?
I am John Hall.
May I know your new travelling dates?
My trip dates are 12/20 and 12/22.
Can I know your travelling airport codes?
My airport codes are from OAK to DFW.
Do you have any other preference?
I want to return in the evening.
Sorry, no flights available on your route to alter your ticket.
No problem, thanks for checking.
Thank you for reaching us.