You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

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: Sure, I am here to help you with this. May I know your name please for further process?

USER: Sure, my name is Rebecca Williams.

ASSISTANT: Sorry Williams, there is no reservation found as per your name to cancel in your database.

USER: That's ok, thank you.

ASSISTANT: You are welcome.