You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I want to cancel my reservation which is done recently due to some business meeting, can you please help me?

ASSISTANT: Sure, may I know your name please?

USER: Sure, my name is Christopher Young.

ASSISTANT: Thanks for waiting Christopher. I have found your flight reservation and cancelled it.

USER: Ok, please cancel it. Thank you for your service.

ASSISTANT: Sure, it is cancelled now. Thank you.