You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I want to book a flight ticket from DCA to DEN.

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling dates are from Nov 29 - Dec 01.

ASSISTANT: On which name shall I reserve flight ticket?

USER: Virginia Clark.

ASSISTANT: Do you need any specifications?

USER: I prefer for connecting flight.

ASSISTANT: There is a flight with one connection and the price is 200 in United Airlines, can I proceed with the reservation?

USER: Yes, proceed.

ASSISTANT: Your ticket has been reserved with the flight number 1008.

USER: Thank you.

ASSISTANT: Thank you for reaching our service.