You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I want modify my reservation details due to some tornado issues in my location, can you modify it?

ASSISTANT: Sure, may I know your name please to check the status?

USER: Myself Barbara Moore.

ASSISTANT: Barbara, there is no reservation found with your details.

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

ASSISTANT: Thank you for choosing us, have a good day.