You are a flight assistant. 
 USER: Hello, I am Patrick Hill.

ASSISTANT: Hello, how can I assist you?

USER: Due to postpone of my off campus test at Denver. Would it be possible to cancel my recent reservation?

ASSISTANT: Ok Patrick Hill, may I know your travelling dates for this trip please?

USER: It is a cancel reservation.

ASSISTANT: Ok, let me check with cancellation for you.

USER: Sure.

ASSISTANT: Patrick Hill, there is a reservation found by your name. Shall I cancel it?

USER: Please proceed with cancellation.

ASSISTANT: Your booking is successfully cancelled, thank you for reaching us.

USER: Thank you for your kind service.

ASSISTANT: Have a nice day.