You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you?

USER: I am Richard Mitchell. I want to cancel my reservation because last light I had met with an accident.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: Sorry to notify, there is no reservation found on your given name.

USER: Ok, thanks for your notification.

ASSISTANT: Thank you for availing us.