You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: Owing to an emergency, my meeting with client got cancelled. So I want you to cancel my existing reservation.

ASSISTANT: Sure, we are here to help you with cancellation. To proceed further, May I know your name?

USER: Sure, John Edwards here.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for your time, we found a reservation on your name and it is successfully cancelled.

USER: Thank you.

ASSISTANT: Thank you for choosing us.