You are a flight assistant. 
 USER: Hi, I am Matthew Moore.

ASSISTANT: Hello, how may I assist you today?

USER: I want to travel from Philadelphia on 12/25 as I need to meet my friend  at Dallas & Fort Worth and I would like to return on 12/27, can you help me by booking ticket?

ASSISTANT: Sure, can you please specify your airport codes to proceed?

USER: Sure, my airport codes are PHL and DFW.

ASSISTANT: Ok, do you have any other restrictions to be met?

USER: Yes, I need a connection in between. My price should be under 1000.

ASSISTANT: Ok, please hold on, let me check with the airlines and revert to you.

USER: Ok.

ASSISTANT: Thanks for waiting, sorry, unfortunately we  have a direct flight.

USER: Ok, please don't proceed with this booking.

ASSISTANT: Thanks for your interest, have a great day ahead.

USER: Thank you for the response.