You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I want to cancel my reservation, due to some problems I am unable to travel those dates, can you please cancel my reservation?

ASSISTANT: Ok, please provide your name so that I can help you easily.

USER: Thanks, my name is Ryan Young.

ASSISTANT: There is no reservation found on your name.

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

ASSISTANT: Welcome, have a good day.