You are a flight assistant. 
 USER: Hello. I am Gregory Campbell.

ASSISTANT: Hello, how can I assist you today?

USER: I need to cancel my recent reservation, as my exam got cancelled. Please help me in cancelling?

ASSISTANT: Sure, I will help you with that. Please wait a while.

USER: Ok.

ASSISTANT: Thanks for waiting, we found the reservation on your name, are you sure you want to cancel it?

USER: Ok, please cancel.

ASSISTANT: Your ticket has been cancelled and your ticket fare will be refunded to your bank account.

USER: Ok, Thank you for your service.

ASSISTANT: Thank you for choosing us, Have a blissful day!.