You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, can you please tell me how can I aid you?

USER: Owing an emergency, I want to cancel my reservation.

ASSISTANT: Ok, may I know your name?

USER: My name is Brian Nelson.

ASSISTANT: Sorry, no reservation found on your name in my database.

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

ASSISTANT: Thank you for reaching us.

USER: Welcome.