You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Larry Walker, want to cancel my reservation. Can you help me?

ASSISTANT: Sure, hold on for a moment.

USER: Take your time.

ASSISTANT: I found a flight on your name, shall I proceed to cancel?

USER: Please cancel it.

ASSISTANT: Your ticket has been cancelled.

USER: Thank you for cancelling my ticket.

ASSISTANT: Thank you for choosing us, have a good day.

USER: You are welcome.