You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: Due to sudden change of my business meeting because of some technical problem, I need to change my reservation so can you help me with that?

ASSISTANT: May I know your good name to proceed further?

USER: I am Elizabeth Anderson.

ASSISTANT: Please be on hold I will check and revert you.

USER: Sure.

ASSISTANT: We did not find any reservation on your name in our database.

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

ASSISTANT: Thank you.