You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you?

USER: Can you please help me to book flight ticket from IAD to AUS?

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

USER: My journey dates are May 5 and May 7.

ASSISTANT: Do you have any connection limit preference?

USER: I prefer connecting flight for this trip.

ASSISTANT: Do you have any other specifications?

USER: No more specifications.

ASSISTANT: Could you help me with your name please?

USER: Myself Thomas Scott.

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

USER: You can proceed.

ASSISTANT: For a economy class your ticket is booked.

USER: Thank you.

ASSISTANT: Thank you for reaching us.