You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how can I aid you today?

USER: Could you please book a flight ticket from TX - AUS to DC - IAD?

ASSISTANT: Sure, we are here to help you for booking.

USER: Ok.

ASSISTANT: Let me know your journey dates.

USER: My travel dates are 01/11 - 01/13.

ASSISTANT: Ok, Is there any price limit?

USER: My airfare is 500.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, we found a flight with 2 connections in Spirit airline.

USER: I need a direct flight.

ASSISTANT: There were no direct flights to your location.

USER: Ok, thank you. I am Matthew Evans.

ASSISTANT: Thank you for availing us.