You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello,. How can I help can?

USER: I need to book a flight ticket.

ASSISTANT: Sure, please provide your details.

USER: I need to travel from IL - ORD to TX - AUS.

ASSISTANT: may I know your name?

USER: My name is Margaret Thompson.

ASSISTANT: Also please provide me your journey dates.

USER: Sure, Travelling dates are departure on May/14 and return on May/16. Make sure that price limit of 5000 with one connection limit.

ASSISTANT: OK, please wait for a while, I will check with the availability and revert you.

USER: OK.

ASSISTANT: Thank you for your patience. There is a flight available with airline Frontier and flight number as 1003. Can I proceed with booking?

USER: Sure, you can proceed now.

ASSISTANT: OK, your ticket has been booked with your requirements.

USER: OK,Thanks for booking.

ASSISTANT: Thank You. Have a great day.