You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I want to cancel my reservation, because I have semester exams on those dates so my trip was postpone, can you please cancel my reservation?

ASSISTANT: Sure, I will help you with the flight ticket cancellation.

USER: Thanks.

ASSISTANT: Can you tell me your name please?

USER: Sure, my name is Patricia Carter.

ASSISTANT: Thanks for waiting, but I have not found any flight reservation on your name.

USER: Oh! It's ok no problem. Thank you for your information.

ASSISTANT: Thank you.