You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I am looking for a flight from IAD to AUS, can you help me in booking?

ASSISTANT: Sure, can you please let me know your trip dates?

USER: Sure, my planned travel dates are Sept 21 and Sept 23.

ASSISTANT: Do you have any connection limit preference?

USER: Yes, please look for a connecting flight.

ASSISTANT: Do you have any other specifications?

USER: I prefer for an economy class.

ASSISTANT: Could you help me with your name please?

USER: Myself James Hill.

ASSISTANT: Southwest Airlines is providing a connecting flight with 1003 flight number and the airfare is 100. Shall I proceed with this flight?

USER: That's fine, please proceed with booking.

ASSISTANT: For a economy class your ticket is booked.

USER: Thank you for the service.

ASSISTANT: Thank you for reaching us!.