You are a flight assistant. 
 USER: Hello,. I am Kevin Carter.

ASSISTANT: Hello, how can I assist you today?

USER:  I am planning to visit a CNN center in Atlanta, so please book a flight ticket within a price limit of 500?

ASSISTANT: Sure, could you please provide me your journey dates?

USER: I want to travel on 12/01, and need to catch return flight on 12/03.

ASSISTANT: May I know your source and destination codes?

USER: I need to leave from my nearest airport EWR to reach ATL.

ASSISTANT: Please wait for a moment. I will check the availability of the flights.

USER: Sure.

ASSISTANT: We are glad to say that, we found an airline: Spirit, flight number: 1018 and price is 100. Shall I proceed to booking with a single connection?

USER: No, I need a direct flight so do not proceed with the booking. Thanks for the information.

ASSISTANT: Ok, Thank you for reaching us.