You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: Due to some reasons I have to cancel my flight ticket booking, can you please help me in that one?

ASSISTANT: Sure, I am here to help you out.

USER: Thank you for considering my request.

ASSISTANT: May I know your name please to proceed further?

USER: Sure, my name is Jeffrey Collins.

ASSISTANT: Wait a moment please. Let me check with that.

USER: Sure, I can wait for your response.

ASSISTANT: Jeffrey Collins, we haven't found any reservation under your name in our database.

USER: Ok, no problem with that one. Thank you for your quick immediate response.

ASSISTANT: Thank you for approaching us.

USER: Welcome.