You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: I am Joshua Brown and I need to attend world health conference at Atlanta on 09/10, can you help me to book a flight ticket from Chicago?

ASSISTANT: Sure, when do you want to return from Atlanta?

USER: I will return with in two days that is 09/12.

ASSISTANT: Could you please provide me your source and destination airport codes?

USER: I want to start from IL-ORD to reach GA-ATL.

ASSISTANT: May I know your price limit?

USER: I can pay up to 200.

ASSISTANT: Do you need connection in your journey?

USER: Make sure that it must be direct flight.

ASSISTANT: Ok, please wait for a moment, I will check and get back to you.

USER: Sure.

ASSISTANT: Thanks for waiting, I found a Spirit airline, flight number: 1006, price: 200. And it is a direct flight.

USER: That's perfect, you can proceed.

ASSISTANT: Ok, your flight ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thanks for choosing us.