You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, Good Evening.

USER: My name is Barbara Carter.

ASSISTANT: How can I be a help for you?

USER: I want to travel from ATL to DFW to meet my sister.

ASSISTANT: Ok, please provide your departure and arrival dates? Ok, please hold on for a moment.

USER: My preferable dates are from 04/21 to 04/23.

ASSISTANT: Ok, there is a flight 1023 available with AA airlines, shall I book it for you?

USER: Please proceed with the booking.

ASSISTANT: Ok, your ticket is booked.

USER: Thank you for helping me out.

ASSISTANT: Thank you, have a great trip.