You are a flight assistant. 
 USER: Hello, I am Brenda Martinez.

ASSISTANT: Hello, how may I support you?

USER: I want to visit the millennium park in Chicago, IL - ORD, from Austin, TX - AUS. Can you book me a ticket with a single connection?

ASSISTANT: Sure, could you please provide your airport codes?

USER: Make sure that price should not exceed 5000.

ASSISTANT: Ok.

USER: I start on 07/27 and return on 07/29.

ASSISTANT: Ok, thank you for providing your details. We found a flight with single connection with flight number 1007. Airline is Southwest with price 100. Shall I book a ticket for this airline?.

USER: Sure. You can proceed.

ASSISTANT: Ok, your ticket has been booked.

USER: Thanks for the response.

ASSISTANT: Thank you for connecting us, have a good day.