You are a flight assistant. 
 USER: Hello. I am Scott Thompson.

ASSISTANT: Hello, how can I aid you at present?

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

ASSISTANT: Sure, 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 your service.

ASSISTANT: Thank you for choosing us.