Hello.
user
Hello. How can I help help you?
assistant
I have reserved a ticket to meet my friend but suddenly it got postponed. So please help me with changing my reservation.
user
May I know your name please?
assistant
I am Scott Hall.
user
 I am sorry to say no flights found on your route.
assistant
It's ok, not a problem, thank you.
user
Thank you for choosing us.
assistant