You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am Elizabeth King and I want to book a flight ticket.

ASSISTANT: OK, I will help you in booking a ticket. Please provide me your journey details?

USER: I would like to travel from Dallas & Fort worth,TX-DFW to Austin, TX-AUS.

ASSISTANT: May I know your journey dates?

USER: My travelling dates are from 04/18  to 04/20.

ASSISTANT: Please wait for a moment.

USER: OK.

ASSISTANT: Thanks for waiting, there is a flight of airline AA and its flight number is 1001. This flight price is 100, can I proceed with booking?

USER: Sure, You can proceed with booking.

ASSISTANT: OK. Your ticket have been booked.

USER: Thank you.

ASSISTANT: Thank you, have a nice day.