You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you?

USER: I would like to make a flight ticket reservation from IAD to DFW, can you please help me?

ASSISTANT: Please provide your trip dates.

USER: Sure, my planned travelling dates are Jul, 21 and 23 respectively.

ASSISTANT: Do you need a break in between your journey?

USER: Sure, my name is Sandra Davis. Yes, I am looking for a connecting flight.

ASSISTANT: Do you need any other specifications?

USER: No, thank you for asking.

ASSISTANT: United Airlines is providing connecting flight on this route with a ticket fare of 100 and flight departs at 14:00 hours and arrives at 11:00 hours, shall I book your ticket in this flight?

USER: Please proceed for booking.

ASSISTANT: Thank you for choosing us.

USER: Thank you for your service.