You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I am Lisa Nelson. I want to attend a meeting with my client at Austin, AUS. Can you please book a ticket for me?

ASSISTANT: Sure, could you please provide your budget for ticket?

USER: Price limit should be under 500.

ASSISTANT: Kindly mention your source point?

USER: Source code is Denver, DEN.

ASSISTANT: Do you need any halt in between journey?

USER: I need connecting flight.

ASSISTANT: May I know your journey dates?

USER: Journey dates are 04/19 to 04/21.

ASSISTANT: Ok, please hold a moment.

USER: Sure.

ASSISTANT: Thanks for your time, we have found a Southwest airline, flight number-1002 connections-1 and ticket fare is 200.

USER: You can proceed.

ASSISTANT: Sure, I have booked you at Southwest.

USER: Thank you.

ASSISTANT: Thank you for reaching us.