You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you today?

USER: My friend birthday party place has been changed to Orlando, Can you please change my existing reservation?

ASSISTANT: Sure, we are here to help you to change it. To proceed further, may I know your name?

USER: Sure, I am William Moore.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, there was no reservation found on your name to change it.

USER: Ok, Thank you for providing information.

ASSISTANT: Thank you for opting us.