You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I would like to change my reservation due to bad weather condition at my destination location, can you please help me out with that?

ASSISTANT: Sure, may I know your name to check with the details.

USER: Thank you. Myself Jonathan Nelson.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Sorry, there are no active reservations on your name to change.

USER: That's ok, no problem. Thank you for checking out.

ASSISTANT: Thank you for reaching our service.