You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I want to cancel my reservation, due to some problems I am not unable to travel those dates, can you please cancel my reservation?

ASSISTANT: Sure, may I know your name please to check the reservation status?

USER: Sure, my name is Deborah Mitchell.

ASSISTANT: Deborah, there is no reservation found with your details.

USER: Oh! May be I am not booked my ticket properly at that time. Thank you for your information.

ASSISTANT: Thank you for choosing us, have a good day.