You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I guide you?

USER: Due to climate condition, I want to change my reservation. Can you do it for me?

ASSISTANT: Sure, may I know your name please?

USER: My name is Scott martinez.

ASSISTANT: Sorry Scott, there is no reservation on your name to change.

USER: That's fine. No issues. Thank you for your information.

ASSISTANT: Thank you, have a nice day.