You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Can you please change my reservation as I have an Important work in my office?

ASSISTANT: Sure, can I have your name please?

USER: Sure, my name is James Parker.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, no reservation found with your name.

USER: No problem, thanks for your support.

ASSISTANT: Thank you for opting us.