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, we are here to help you. Please wait a while.

USER: Sure.

ASSISTANT: Thanks for being waiting. May I know your name?

USER: I am Patricia Jones.

ASSISTANT: We didn't found any reservation by this name.

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

ASSISTANT: Thank you for choosing us.