You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I help you?

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

ASSISTANT: Sure. Your good name please?

USER: I am Richard Thomas.

ASSISTANT: Thanks for providing your name. There was no reservation found on your name.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Thanks for opting us.