You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I assist you?

USER: Please book a ticket from Austin to Washingon with connection 1 and  price limit : 500.

ASSISTANT: Sure, could you please provide me your airline codes and dates?

USER: Sure. TX-AUS to DC-IAD with 06/08 - 06/10.

ASSISTANT: Please wait a moment, let me know the details and I will get back to you. Thanks for waiting, we found a flight on your details, airline is UA and flight number is 1016. Shall I proceed for booking?

USER: My name is John Allen. Proceed for booking.

ASSISTANT: Thanks for giving your name, your ticket has been booked.

USER: Thanks for your assistance.