You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I address you?

USER: I want to cancel my recent reservation, as my business trip was cancelled.

ASSISTANT: Sure, I will help you with that. May I know your good name?

USER: Sure. I am Joseph Moore.

ASSISTANT: Ok, Hold on for a minute.

USER: Ok.

ASSISTANT: We are sorry, there is no reservation found against your name.

USER: Fine. Thank you for your service.

ASSISTANT: Thank you, Have a pleasant day.