You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you today?

USER: Please help me in booking my flight ticket from DCA to DFW?

ASSISTANT: Sure, I am here to help you with that. May I know your travelling dates, please?

USER: My travelling dates are June 10 and June 12.

ASSISTANT: Can I know your connection limit?

USER: I need single connection flight.

ASSISTANT: Do you have any other specifications?

USER: I need economy class ticket.

ASSISTANT: May I know your name please?

USER: Myself Raymond Young.

ASSISTANT: There is a connecting flight-1002 available in American Airlines with a fare of 200. Shall I book it?

USER: Please proceed with booking.

ASSISTANT: Your booking is done in economy class.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us, have a safe journey.