You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I support you?

USER: Can you change my reservation? Because, my meeting got preponed,as my clients came earlier.

ASSISTANT: Sure, I am happy to help you. May I know your name?

USER: Ok,I am Steven Brown.

ASSISTANT: Ok, please standby.

USER: Sure.

ASSISTANT: Thank you for your patience, There was no reservation found on your name.

USER: Thank you.

ASSISTANT: Thank you for reaching us.