You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: Due to some entrepreneurship meeting, I am going to change my existing reservation. Can you help me?

ASSISTANT: Sure, can I know your name for checking purposes?

USER: Carolyn Jones here.

ASSISTANT: I am sorry, there are no reservations with your name.

USER: No problem, Thanks for the information.

ASSISTANT: Thank you, have a good day.