You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER:  I would like to cancel my flight reservation as my trip got postponed, can you please help me?

ASSISTANT: Sure, I am here to help you. May I know your good name please?

USER: I am Anthony Moore.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry Moore, there is no active reservation found on your name to cancel it.

USER: That's ok, thank you for checking.

ASSISTANT: You are welcome.