You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you now?

USER: My name is Stephen Parker.

ASSISTANT: Thanks for providing your name.

USER: I want to cancel my reservation due to cancel of my conference.

ASSISTANT: Ok, please wait a moment, I will check the reservation list and revert to you.

USER: Sure.

ASSISTANT: Thanks for waiting.

USER: Ok.

ASSISTANT: Sorry to say that there is no reservation found on your name.

USER: No issue, thanks for your service.

ASSISTANT: Thanks for choosing us and have a nice day.