You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you now?

USER: I wan to book a flight ticket from PHL to DFW. Could you help me in booking?

ASSISTANT: Sure, I will help you with that. Can I have your travel dates please?

USER: My travelling dates are from Apr 16-18.

ASSISTANT: Do you prefer any specific class to travel?

USER: No, but I prefer for normal-cost airline.

ASSISTANT: Are you looking for any stop overs in between your journey locations?

USER: Yes, I prefer for single connection.

ASSISTANT: Can I have your good name please?

USER: Jack Clark here.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: AA airlines running a flight in your route with connection 1 and the ticket fare is 100. Shall I proceed with booking?

USER: Yes, please proceed.

ASSISTANT: Ok Jack Clark, your ticket booking has done and the flight number is 1023.

USER: Thank you for helping me.

ASSISTANT: Thank you for choosing us, have a great journey.