You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you at this moment?

USER: I am Charles Roberts.

ASSISTANT: Nice meeting you Charles.

USER: Can you please help me in cancelling my flight ticket booking that I am unable to travel the trip?

ASSISTANT: Sure, I am glad to help you.

USER: Thank you for accepting my request.

ASSISTANT: Please wait a moment to check your previous reservation.

USER: Sure.

ASSISTANT: We regret that, there is no reservation on your name in our records.

USER: No problem with that one, thank you for your service and information.

ASSISTANT: Thank you for reaching us, have a great day.