You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you.

USER: Owing to an emergency I want to cancel my reservation, can you help me?

ASSISTANT: Sure, may I know your name for checking purpose?

USER: Myself Benjamin Green.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry, no reservation found on your name.

USER: No problem, thanks for checking.

ASSISTANT: Thank you for approaching us, have a nice day.