You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I am Stephanie Carter. Can you help me for booking a flight ticket from DC-IAD to CO-DEN?

ASSISTANT: Sure, Stephanie, could you provide me your preferable dates?

USER: My departure day is 09/09 and return day is 09/11. Price limit should be with in 1000.

ASSISTANT: Yes, I found a flight with the price of 100 and single connection limit can I proceed?

USER: Please book this flight ticket.

ASSISTANT: OK, your ticket has been booked.

USER: Thank you for your help.

ASSISTANT: Thank you, have a safe journey.