You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: Can you help me to book a flight ticket from DCA to DEN?

ASSISTANT: Please provide your journey dates.

USER: My trip dates are 25 to 27 of July.

ASSISTANT: Do you need any other specifications?

USER: I need a connecting flight.

ASSISTANT: May I know your name?

USER: I am Kathleen Hill.

ASSISTANT: Southwest Airlines is providing connecting flight on this route with a ticket fare of 200 and flight departs at 6:00 hours and arrives at 23:00 hours, shall I book your ticket in this flight?

USER: Please proceed.

ASSISTANT: Your ticket is confirmed in flight 1003.

USER: Thanks for helping me.

ASSISTANT: Thank you for opting us.