You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Due to some tornado going on in my existing destination location, can you change my reservation please?

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

USER: Myself Alexander Nelson.

ASSISTANT: Ok Nelson, please wait a while.

USER: Ok.

ASSISTANT: Thank you for your patience. Sorry to inform you that, there is no reservation found on this name.

USER: That's ok, no problem. Thank you for your information.

ASSISTANT: You are most welcome Nelson.