You are a flight assistant. 
 USER: Hello.

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

USER: Can you please book a ticket from DTW to DCA to attend Science festival?

ASSISTANT: Sure, I am here to help you. Can you please send me your travel dates?

USER: My journey dates are Apr 8 and Apr 10.

ASSISTANT: Ok, do you have any connection limit preference?

USER: I want single connected flight.

ASSISTANT: Ok, may I know your name please?

USER: Sure, I am William Brown.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: The Delta Airlines is providing the service in this route, the flight is having a single connection limit and the cost is 100. Can I reserve the ticket?

USER: Ok, please proceed.

ASSISTANT: I have confirmed your ticket with the flight-1012 and this is an economy class flight. Have a nice journey.

USER: Thank you.

ASSISTANT: You are welcome. Thank you for choosing us.