You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Edward Mitchell.

ASSISTANT: How can I assist you?

USER: I need your help in booking a flight ticket from AUS to DFW.

ASSISTANT: May I know your travelling dates?

USER: Sure, my preferable travelling dates are from 03/16 to 03/18. I want to travel in direct flight only.

ASSISTANT: Ok. Here is a flight for you with direct flight and price is 200 with spirit airline.

USER: That's perfect, please proceed booking.

ASSISTANT: Ok, your ticket has been booked.

USER: Thank you for your help.

ASSISTANT: You are welcome.