You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I address you today?

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 please?

USER: I am Sharon Perez.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, no reservation found with your name to change.

USER: Ok, not a problem. Thanks for your help and support.

ASSISTANT: Thanks for opting us.