You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I support you today?

USER: I have some personal maters that need fixing so I need to change an existing reservation. Can you please help me in that?

ASSISTANT: Sure, we are here to help you to change it. May I know your name?

USER: My name is Paul Miller.

ASSISTANT: Ok, please wait for sometime.

USER: Sure.

ASSISTANT: There was no reservation found on your name.

USER: That's not a problem. Thanks for your information.

ASSISTANT: Thank you for choosing our service.