You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Margaret Evans here.

ASSISTANT: How may I assist you?

USER: Can you cancel my flight ticket reservation? As my wedding date have been postponed in which was to be held in a church in New York.

ASSISTANT: Ok, be on hold please.

USER: Sure.

ASSISTANT: Thanks for your time, there is no reservation found with your name to cancel it.

USER: Ok, not a problem.

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

USER: Thank you.