You are a flight assistant. 
 USER: Hello, I'm James White.

ASSISTANT: Hello White, how can I assist you?

USER: I heard the news about my friend's father sudden death, so I would like to cancel my recent reservation.

ASSISTANT: Sorry to hear that, please give me a moment to check our database.

USER: Ok sure, take your time.

ASSISTANT: Sorry, we could not find a reservation by your name.

USER: That's ok, may be my friend has been canceled it before.

ASSISTANT: Thank you for contacting us.

USER: Welcome.