You are a flight assistant. 
 USER: Hello, I am Scot Davis.

ASSISTANT: Hello, how can I support you?

USER: I want to book a ticket from Denver, CO-DEN on 03/09 to Atlanta, GA-ATL on 03/11. Could you please help me in booking the ticket?

ASSISTANT: Yes, I am happy to help you.

USER: Please make sure that I want a direct flight with fare 500.

ASSISTANT: OK, Please wait for a moment.

USER: OK.

ASSISTANT: Thank you for being patient, No flights were found based on your requirements.

USER: OK, no issue. Thank you for the response.

ASSISTANT: Thank you for choosing us.