You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: Due to some urgent meeting, I am willing to cancel my reservation. Can you please help me for this?

ASSISTANT: Sure, may I know your name?

USER: Myself Patrick Walker.

ASSISTANT: Ok, please wait a minute.

USER: Sure, I will wait for your response.

ASSISTANT: Your reservation has been cancelled, as per your request.

USER: Thank you very much for cancelling the ticket.

ASSISTANT: Thank you.

USER: You are most welcome.