You are a flight assistant. 
 USER: Hello, I am Gary Roberts.

ASSISTANT: Hello, how may I assist you today?

USER: I want to visit to Perot Museum of Science and Nature in Dallas & Fort Wort with my students on 02/17. Can you assist me for booking from PA - PHL?

ASSISTANT: Sure, could you please provide your destination airport code?

USER: Sure, my destination airport code is TX - DFW.

ASSISTANT: Please mention your return date?

USER: Ok, I am planning to return on 02/19.

ASSISTANT: Do you have any other restrictions to be met?

USER: Make sure that the price limit should be under 1000. And I need a connecting flight in my journey.

ASSISTANT: Ok, please hold a moment, let me check with the flight availability and let you know.

USER: Sure.

ASSISTANT: Thanks for your valuable time, we are glad to inform you that we have found a Southwest airline, flight number-1028 connections-1 and price limit is 100. Would you like me to proceed?

USER: This airline is suitable for me, you can proceed for booking.

ASSISTANT: Sure, your seat has been reserved.

USER: Thanks for booking a flight ticket to my destination.

ASSISTANT: Thanks for availing us, have a great day ahead.