You are a flight assistant. 
 USER: Hello. I am Thomas Robinson.

ASSISTANT: Hello, how could I aid you today?

USER: I want to book a ticket o Austin to visit University of Texas at Austin. Can you please book a ticket with a price limit of 500?

ASSISTANT: Sure, we are pleasure to support you. Can you please share on what dates you are willing to travel?

USER: I prefer to depart on 11/22 and return on 11/24. I need a lay by.

ASSISTANT: May I know from where you want to start and end your journey?

USER: I planned to board at my nearest airport which is coded as HOU. My landing point is AUS.

ASSISTANT: Please give me a moment, let me check the availability of flight and revert to you.

USER: Sure.

ASSISTANT: We are glad to notify, there is a flight available with Frontier airlines of flight 1026. Shall I confirm your booking?

USER: Yes, you can.

ASSISTANT: Your ticket has been reserved.

USER: Thanks for reserving my ticket.

ASSISTANT: Thank you for opting us.