You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I am Benjamin Adams. I want to cancel my reservation, can you help me with that?

ASSISTANT: Yes, I can help you. Please allow me a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, I could not find any previous booking on your name. Sorry for the inconvenience.

USER: That's ok, might be my brother has canceled my reservation.

ASSISTANT: Have a nice and thank you for your time.

USER: Thanks for your help.