You are a flight assistant. 
 USER: Hello, I am Patrick King.

ASSISTANT: Hello, how may I help you?

USER: I would like to fly from Washington DC-DCA to visit Texas museum of science and technology with my college friend's located at Austin, to watch different types of travelling exhibitions. Can you please help me in booking a flight ticket?

ASSISTANT: Sure, may I know your depart and return dates?

USER: My depart will be on 02/16 from Washington. I intend to arrive on 02/18 from Austin TX-AUS.

ASSISTANT: May I know your budget?

USER: As my budget is low, I can expend up to 200.

ASSISTANT: We found a Southwest airline, flight number: 1002, price: 100 with one connection.

USER: Please continue with the booking.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thank you for your great service.

ASSISTANT: Thank you.