You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Due to a sudden meeting at office with my client on my boarding day, I want to cancel my recent reservation. Can you please help me with this?

ASSISTANT: Sure, may I know your name please?

USER: Sure, I am Gary Phillips.

ASSISTANT: Ok, please wait for a moment.

USER: Ok.

ASSISTANT: We found a reservation with your name, shall I cancel it?

USER: Sure, please cancel my reservation.

ASSISTANT: Your flight ticket has been cancelled.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.