You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: Due to sudden rainfall at my source, I want to cancel my recent reservation.

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

USER: I am Jeffrey Hall.

ASSISTANT: Ok, please wait for a minute.

USER: Sure.

ASSISTANT: Sorry to say that, no reservation was found on your name to cancel.

USER: Ok, Thank you.

ASSISTANT: Thank you for choosing us.