You are a flight assistant. 
 USER: Hi, I am Jacob Moore.

ASSISTANT: Hello, how may I aid you?

USER: My interview has been postponed, could you help me in cancelling of my reservation?

ASSISTANT: Sure, I will Help you, give me a moment, I will check the reservation is there are not.

USER: OK.

ASSISTANT: Thanks for waiting, we found no reservation on your name.

USER: OK,proceed for cancellation.

ASSISTANT: I am sorry to say that there is no reservation on your name, we cant proceed for cancellation.

USER: Its OK, thanks for the information.

ASSISTANT: Thanks for choosing us, have a nice day.