You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Can you please help me to book a ticket from  CLT to DFW?

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

USER: I want to start on Feb 23 and return on Feb 25.

ASSISTANT: Do you have any preferences about class?

USER: Ok. No, I do not have any preferences.

ASSISTANT: Please mention your name.

USER: Jeffrey Hall here.

ASSISTANT: The Spirit airlines provides an economy class flight with price 100 and the connections 1. Shall I confirm your ticket?

USER: You can proceed to booking.

ASSISTANT: Your ticket is booked. The flight number is 1006.

USER: Thank you.

ASSISTANT: Welcome, have a great day.