You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I want to book a flight ticket from AUS to IAD for attending a event.

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

USER: My trip dates are Dec 20 and Dec 22.

ASSISTANT: Do you need any preference?

USER: I prefer to travel in a connecting flight.

ASSISTANT: Can I know your name please?

USER: I am Rayon Nelson.

ASSISTANT: Frontier Airlines is providing connecting flight with the ticket fare of 100. Shall I proceed?

USER: You can proceed with booking.

ASSISTANT: Your ticket has been confirmed by flight number 1001 and an economy class.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.