You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: I am Anna Scott, I want to change my reservation as my plan to visit New York for vacation is postponed. Can you help me with that?

ASSISTANT: Sure, we are here to help you. Please wait a moment.

USER: Sure.

ASSISTANT: Thank you for your time, sorry, no reservation found with your name.

USER: Thank you for the information.

ASSISTANT: Thank you for opting us.