You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I help you?

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

ASSISTANT: Sure, May I know your name?

USER: I am Patricia Miller.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, There is no reservation found on your specified name.

USER: Ok, no issues. Thanks for helping me.

ASSISTANT: Thank you for choosing us.