You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I want to book a flight ticket from Dallas DFW to HOU. Can you find a flight ticket for me?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: Ok, my planned trip dates are on Dec 15 and return on Dec 17.

ASSISTANT: Do you have any preferences about flight connections?

USER: I need a single connecting flight.

ASSISTANT: Do you have any preferences about class?

USER: No, but I want to depart in the afternoon time.

ASSISTANT: Please mention your name.

USER: Yes, I am James Phillips.

ASSISTANT: The Spirit airlines providing an economy class flight with price 200 and the connections 1. Shall I confirm your ticket?

USER: Ok, you can proceed with the ticket booking.

ASSISTANT: Your ticket is booked. The flight number is 1027.

USER: Thank you for your service.

ASSISTANT: Welcome, have a great day.