You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Richard Jones and I want to book a ticket from TX-AUS to DC-IAD.

ASSISTANT: Please tell me your trip dates too.

USER: OK, my trip is from 12/17 to 12/19.

ASSISTANT: Flight number 1023 is matching with your requirements. Can you tell me if you have any limitations?

USER: Yes, the connections limit is 1 of cost 5000.

ASSISTANT: Flight cost is 100 only with 1  connection.

USER: OK, please book it for me.

ASSISTANT: OK. Your flight ticket is booked .

USER: Thank you, for your help.