You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you at this moment?

USER: Please book a flight ticket from LAS to DCA?

ASSISTANT: Sure, I am here to help you. Can you please provide your journey dates?

USER: My journey dates are May 11 and May 13.

ASSISTANT: Do you have any connection limit preference?

USER: I need a direct flight.

ASSISTANT: Do you have any other specifications for this trip?

USER: I prefer a economy class.

ASSISTANT: May I know your good name please?

USER: I am Frank Moore.

ASSISTANT: Hawaiian Airlines is providing direct flight on this route with a ticket fare of 200 and flight departs at 8:00 hours and arrives at 8:00 hours, shall I book your ticket in this flight?

USER: Go ahead.

ASSISTANT: Frank Moore, your ticket is booked in flight number 1018.

USER: Thank you for your help.

ASSISTANT: You are welcome and have a safe journey.