You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Can you help me to book a flight ticket from IAD to DFW?

ASSISTANT: Sure, I am happy to help you. Can you please let me know your travelling dates?

USER: My travel dates are 10 to 12 of Mar.

ASSISTANT: Do you prefer any break in between journey?

USER: I need a connecting flight.

ASSISTANT: Are there any other specifications for you?

USER: I prefer to travel in economy class.

ASSISTANT: May I know your good name?

USER: I am Nancy Thompson.

ASSISTANT: Southwest Airlines is providing connecting flight with the ticket fare of 100 and depart time is 13:00 hours, arrival time is 15:00 hours. Shall I proceed?

USER: Please proceed to booking.

ASSISTANT: Ok, your ticket is reserved in an economy class and the flight number is 1020.

USER: Thank you for helping me.

ASSISTANT: Thank you for choosing us.