You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I  help you?

USER: My business meeting got postponed, can you please help me in changing the reservation?

ASSISTANT: Sure, just a moment please. May I know your name please?

USER: Please check the reservation on the name of Cynthia Mitchell.

ASSISTANT: I am sorry no reservation found on your name.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for choosing us.