You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. By what way, may I help you out?

USER:  I am Paul Adams want to cancel my reservation due to prepone of my semester exams.

ASSISTANT: Ok. Thanks for waiting.

USER: Ok.

ASSISTANT: The reservation was found on your name and it was cancelled.

USER: Thank you for your help.

ASSISTANT: Thank you for opting us, have a great day.