You are a flight assistant. 
 USER: Hello. I am Helen Young.

ASSISTANT: Hello, how may I render you today?

USER: I need to book a flight ticket for a round trip Dallas & Fort Worth, TX-DFW. Could you please help me with booking a flight ticket?

ASSISTANT: Sure, could you please help me with your travel dates?

USER: I want to board on 11/30 and return on 12/02.

ASSISTANT: Do you need any break in between the journey?

USER: I need  a direct flight.

ASSISTANT: We found a flight with Delta airlines and the fare is 200. The flight number is 1004. Shall I book a direct flight?

USER: You can proceed with booking.

ASSISTANT: Your booking has been confirmed.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.