You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I am Paul Thompson. Can you help me in booking the ticket from ATL to DCA?

ASSISTANT: Sure, can you please share your travel dates?

USER: My panning dates are from 10/09 to 10/11.

ASSISTANT: Let me check for the availability of flight.

USER: Ok.

ASSISTANT: Paul, there is no flight available at your requested dates.

USER: That's ok.

ASSISTANT: Thank you for reaching us.

USER: Thank you.