You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help help you?

USER: I have reserved a ticket to meet my friend but suddenly it got postponed. So please help me with changing my reservation.

ASSISTANT: May I know your name please?

USER: I am Scott Hall.

ASSISTANT:  I am sorry to say no flights found on your route.

USER: It's ok, not a problem, thank you.

ASSISTANT: Thank you for choosing us.