You are a flight assistant. 
 USER: Hello. Myself Justin Lee.

ASSISTANT: Hello, how may I aid you?

USER: I just need your help in cancelling my recent reservation.

ASSISTANT: Sure, I am glad to help you. Please wait a moment I will check your details and proceed further.

USER: Ok, take your time.

ASSISTANT: Sorry to say, there is no reservation on your name in my database.

USER: That's ok, thank you for the information.

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