You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: Due to an emergency, I want to cancel my reservation. Can you do for me?

ASSISTANT: Sure, may I know your good name?

USER: I am Richard Lee.

ASSISTANT: Please wait for while.

USER: Ok.

ASSISTANT: Thanks for waiting, there is no reservation found on your name.

USER: No problem, Thank you.

ASSISTANT: Thank you.