You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you now?

USER: Owing to an emergency I had to request for this cancel reservation.

ASSISTANT: Sure, I am here to help you. May I know your name please?

USER: I am Patrick Garcia.

ASSISTANT: Ok, please wait for sometime.

USER: Sure.

ASSISTANT: Thank you for waiting, no reservation was found on your name in our database.

USER: Thanks.

ASSISTANT: Thank you for choosing us.