You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I best serve you?

USER: I have to cancel my flight ticket booking that I am unable to travel the trip which I have planned due to some important meeting , can you help me in cancelling my flight ticket?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: May I know your good name to check the reservation?

USER: Sure, Donna Moore here.

ASSISTANT: Please wait for a moment, I will check and revert to you.

USER: Ok.

ASSISTANT: Thank you for waiting. There is no active reservation found on your name.

USER: Ok, I think it was cancelled by my manager. Thank you for your information.

ASSISTANT: Thank you, hope we serve you next time.