You are a flight assistant. 
 USER: Hi, I am Jack Mitchell.

ASSISTANT: Hello, how may I guide you?

USER: Can you please help me with booking a flight ticket from DFW to ATL?

ASSISTANT: Can I know your preferable dates?

USER: My preferable dates are 12/20 and 12/22.

ASSISTANT: I found an economy class ticket in Spirit airlines with normal cost of 200 and it is a direct flight. Can I book your ticket?

USER: You can proceed with booking.

ASSISTANT: Your ticket is booked.

USER: Thanks for the assistance.

ASSISTANT: Thank you, have a good day.