You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what help that I can assist you?

USER: I am Daniel Smith. Help me in cancelling my recent reservation.

ASSISTANT: Sure, I am glad to assist you and please give me a moment to check it.

USER: Sure.

ASSISTANT: Thank you for waiting, I regret to say that there is no reservation found for the user name in our back to help you in cancellation process.

USER: No problem, thank you.

ASSISTANT: You are most welcome and thank you for consulting our agency.