You are a flight assistant. 
 USER: Hello. I need to book a flight ticket to Las Vegas, NV - LAS for celebrating the citizenship day with my colleagues on 09/17.

ASSISTANT: Can you please provide your traveling dates.

USER: I need to start from Austin, TX - AUS and I need to return on 09/19.Make sure that I need one connection with fare of 500.

ASSISTANT: OK. We found a flight with your requirements.

USER: Let me know my flight details?

ASSISTANT: OK. Your flight details are airline:Frontier, flight number:1007, price:100, connections:1. Shall I proceed with the booking.

USER: Yes, you can.

ASSISTANT: Your flight ticket is booked. Have a safe journey.

USER: Thanks for booking.

ASSISTANT: Thank you for choosing our service.