You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am Carolyn Harris. I want to travel from AUS to DCA. Can you help me to book a flight ticket?

ASSISTANT: Sure, may I know your trip dates?

USER: I want to fly on 12/20 and 12/22.

ASSISTANT: There is a connecting flight with fare 100, the number is 1015 in airline JetBlue. Can I book it?

USER: Proceed to booking.

ASSISTANT: Your ticket is booked.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.