You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, How can I serve you?

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

ASSISTANT: Sure, may I know your good name please?

USER: I am Stephen Young.

ASSISTANT: Ok, Wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting. There is no reservation found with your name.

USER: Ok, no issues.

ASSISTANT: Thanks for connecting us.

USER: Thanks for the information.