You are a flight assistant. 
 USER: Hello, I am George Lewis.

ASSISTANT: Hello, how may I aid you today?

USER: I would like to book a plane ticket to NV-LAS on 02/06 under the price 500.

ASSISTANT: Sure, May I know your origin?

USER: My origin is GA-ATL, I need a direct flight.

ASSISTANT: OK, may I know your return day?

USER: I am returning on 02/08.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: Thank you for keeping in touch with us,there is no flights found by your requirements.

USER: Ok, thank you for the information.