You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: Owing an emergency, I want to cancel my reservation. Please help me with it.

ASSISTANT: Sure, I will help you. May I know you good name please?

USER: I am Nicholas Johnson.

ASSISTANT: Please wait a moment, I will check and get back to you.

USER: Ok.

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

USER: Thank you for your information.

ASSISTANT: Thanks for picking us.