You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you at this minute?

USER: I want to travel IAD, can you please help me to book flight ticket from DFW?

ASSISTANT: Sure, I am here to help you with that. Can I know your planned trip dates?

USER: My journey dates are Sept 18 and Sept 20.

ASSISTANT: May I know your name?

USER: Jason Mitchell here.

ASSISTANT: Do you have any other requirements?

USER: I need a connecting flight.

ASSISTANT: Is there any other requirements?

USER: I do not have any other requirements.

ASSISTANT: Ok, wait for a minute.

USER: Sure.

ASSISTANT: The Southwest airlines are providing a flight having a connection limit 1 and the ticket fare of 100. Can I proceed with the ticket booking?

USER: Yes, proceed.

ASSISTANT: I have reserved your flight ticket in an economy class and the flight number 1003.

USER: Thank you for booking.

ASSISTANT: Thank you for reaching us. Have a safe journey.