You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I guide to today?

USER: I need to book a flight ticket from DFW to IAD, Can you please help me for booking?

ASSISTANT: Sure, I am gleeful to help you with that. May I know your preferable travel dates?

USER: I would like to travel on 06/15 to return on 06/17.

ASSISTANT: Can I know your connection limit?

USER: I need a connecting flight.,.

ASSISTANT: Do you have any other specifications?

USER: I need a economy class.

ASSISTANT: There is a connecting flight-1005 in Frontier Airlines with a fare of 100. Shall I proceed with booking?

USER: Ok, proceed for booking.

ASSISTANT: May I know your name for further purpose?

USER: Jason Anderson here.

ASSISTANT: Jason Anderson , your booking is done in economy class. Thank you for reaching us, have a safe journey.

USER: Thanks for your information.