You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I want to book a flight ticket from IAD to LAS. Could you help me in booking?

ASSISTANT: Sure, I will help you with booking. Please share me when you planned to travel?

USER: My travelling dates are from Aug 24 - 26.

ASSISTANT: Do you want a connecting flight for your journey?

USER: I prefer for connecting flight.

ASSISTANT: Please mention your depart and return flight timing preferences?

USER: No.

ASSISTANT: Is there any other any other requirement?

USER: No.

ASSISTANT: May I know your good name?

USER: Gary Hill.

ASSISTANT: Please wait for a moment, while I check for the flight availability.

USER: Ok.

ASSISTANT: Thank you for waiting, I found a connecting flight 1020 of Frontier Airline, fare is 100 and class is economy. Shall I proceed with booking?

USER: Yes, please proceed.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you.