You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you for today?

USER: As my meeting with my office heads was cancelled, I want to cancel my recent reservation with the name of Justin Walker.

ASSISTANT: Sure. Wait a while.

USER: Ok.

ASSISTANT: No reservation found with your name.

USER: Ok, no problem.

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

USER: Thank you for your service.