You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Elizabeth Harris here.

ASSISTANT: How can I assist you?

USER: Can you please help me in booking a flight ticket from AUS to DCA?

ASSISTANT: Sure, may I know your travel dates?

USER: Sure, my travel dates are from Mar 17 to Mar 19.

ASSISTANT: Do you have any preferences?

USER: I need a connecting flight.

ASSISTANT: Ok, please wait for a while.

USER: Sure, I will wait for your response.

ASSISTANT: Flight-1012 is available in Spirit airlines with single connection and the flight fare is 100. Can I proceed?

USER: Ok, please proceed.

ASSISTANT: Your booking is confirmed.

USER: Thank you for booking.

ASSISTANT: Thank you for connecting us.