You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I need to book a flight ticket from HOU to DCA, Can you please help me for booking?

ASSISTANT: Sure, I am here to help you. Can you please provide your journey dates?

USER: I would like to travel on 06/19 to return on 06/21.

ASSISTANT: Do you have any connection limit preference?

USER: I need a connecting flight.

ASSISTANT: Do you have any other specifications for this trip?

USER: Yes, I need a economy class.

ASSISTANT: May I know your good name please?

USER: Steven Hall here.

ASSISTANT: American Airlines is providing connecting flight on this route with a ticket fare of 200 and flight departs at 15:00 hours and arrives at 3:00 hours, shall I book your ticket in this flight?

USER: Ok, proceed for booking.

ASSISTANT: Steven Hall, your ticket is booked in flight number 1004.

USER: Thanks for your information.

ASSISTANT: You are welcome and have a safe journey.