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: Just a moment please.

USER: Sure, please check the details on the name of Samuel Brown.

ASSISTANT: I am sorry no reservation found on your name.

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

ASSISTANT: Thank you for choosing us.