You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I guide you for the day?

USER: I want to book a ticket from DCA to LAS to attend seminar, can you help me in booking?

ASSISTANT: Sure, may I know your planned journey dates?

USER: I am departing on Dec 15 and return on Dec 17.

ASSISTANT: Do you have any preferred timings for your journey?

USER: I am ok with any time.

ASSISTANT: Would you like to board a connecting flight or direct flight?

USER: I prefer a connecting flight.

ASSISTANT: Do you have any other specifications?

USER: I do not have any specifications.

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

USER: Please proceed for booking.

ASSISTANT: May I know your name please?

USER: My name is Robert Brown.

ASSISTANT: Robert Brown your booking is confirmed successfully in economy class.

USER: Thank you for your help.

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