You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am David Brown. I would like to cancel my reservation as I am leaving for hometown, can you please help me out?

ASSISTANT: Sure, please wait for a while.

USER: Thank you. Sure.

ASSISTANT: We have found reservation on your name, shall I cancel it?

USER: Sure, you can cancel the ticket.

ASSISTANT: Your reservation has been cancelled.

USER: Thank you for your services.

ASSISTANT: Thank you.