You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,  how may I aid 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. Can I have your name to proceed?

USER: Sure, I am Joshua Miller.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Thank you for your time, sorry, no reservation found with provided name.

USER: Ok, Thanks for your service.

ASSISTANT: Thank you for availing us.