You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How may I help you?

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

ASSISTANT: Sure, please wait for a minute.

USER: Ok.

ASSISTANT: Unfortunately there is no reservation found with your name.

USER: Ok, no issues.

ASSISTANT: May I know your name?

USER: I am Joseph Mitchell.

ASSISTANT: Thank you.

USER: Thanks for your service.