You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Betty Martinez.

ASSISTANT: How can I help you at this moment?

USER: I would like to meet my brother at Washington, will you help me in booking the flight ticket from AUS to IAD?

ASSISTANT: Sure, I am happy to help you in booking flight ticket. Could you please let me know your preferable travel dates for booking flight ticket?

USER: I would like to start my journey on 12/19 and return on 12/21.

ASSISTANT: Ok, please hold on a moment, I will check flight availability in this route.

USER: Ok, I will wait for your response. I need a 1 stopover in between my journey.

ASSISTANT: There is a flight available in this route as per your requested dates, airline is Hawaiian and connection limit of this airline is 1 with minimum fare of 100. Are you ok with this flight?

USER: Sure, you can proceed with the booking.

ASSISTANT: I have confirmed your flight ticket, flight number is 1020.

USER: Thank you for helping me.

ASSISTANT: You are welcome Betty Martinez.