You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: Can you please help me in booking a flight ticket from IAD to DFW?

ASSISTANT: Sure, let me know your trip dates?

USER: Sure, my travel dates are from June 19 to June 21.

ASSISTANT: Would you like any layoff in your journey?

USER: Yes, I need a connecting flight.

ASSISTANT: Do you want to avail any other benefits for your journey?

USER: I prefer economy class for my journey.

ASSISTANT: Ok, can you share your name please?

USER: Rachel Lee here.

ASSISTANT: Delta Airlines has a connecting flight with number 1004 for fare 100 with an economy class seat, shall I proceed?

USER: Ok, please proceed.

ASSISTANT: Your booking is confirmed.

USER: Thank you for booking.

ASSISTANT: Thank you for opting us.