You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I guide you today?

USER: This September, I would like to attend a Green fest Philly in Philadelphia, so could you please reserve a flight ticket which is going to Philadelphia?

ASSISTANT: How long your trip dates are for?

USER: It's a two days fest, so I would like to spend two days in Philadelphia.

ASSISTANT: Let me know, when you are willing to travel?

USER: I would like to go on 09/24 and return back on 09/26.

ASSISTANT: Can you please provide me your nearest airport codes?

USER: Sure, I would like to start my journey from my home town which is ATL and return back from PHL.

ASSISTANT: Do you have any other specifications?

USER: Please, ensure that it is a single connected flight and it costs below 200.

ASSISTANT: Ok, please wait a moment.

USER: Ok sure, take your time.

ASSISTANT: May I know your name.

USER: Myself Carol Jones.

ASSISTANT: Sorry, no flights found with your requirement.

USER: That's ok, thank you.

ASSISTANT: Thank you for choosing us.