You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, what type of help that you are expecting from my side?

USER: I am David Wilson. I would like to book a flight ticket within the fare limit 500 to Austin, can you help me to book a ticket?

ASSISTANT: Sure, I am glad to assist you in booking process and can you please share your airborne and recur planned travel dates?

USER: My trip dates are Oct 9 to Oct 11.

ASSISTANT: I need your source and destination location airport codes, can you please share that?

USER: My source is DCA and destination is AUS.

ASSISTANT: Do your prefer any particular class?

USER: No.

ASSISTANT: Please be on hold for a moment.

USER: Sure.

ASSISTANT:  I found a flight with a fare of 100 and there is a 1 halt in your journey and the flight number is 1007 in Spirit airlines, shall I proceed with ticket booking?

USER: You can reserve it.

ASSISTANT: I have confirmed your flight ticket booking in the above flight.

USER: Thank you.

ASSISTANT: You are most welcome and thank you for reaching our agency.