You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: I am Andrew Hill. I would like to cancel my reservation as I am leaving for business meet, can you please help me out?

ASSISTANT: Sure, I am here to help you. Please wait for a while.

USER: Thank you. Sure.

ASSISTANT: We found a reservation on your name to cancel, shall I cancel?

USER: Ok, you can cancel.

ASSISTANT: Your reservation has been cancelled.

USER: Thank you for your services.

ASSISTANT: Thank you for choosing us.