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 check whether there is any refund policy on my reserved ticket?

ASSISTANT: Please wait a while, may I know your name please?

USER: Sure, my name is Charles Johnson.

ASSISTANT: Sorry to say, there is no reservation on your name in our database.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for opting us.