You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you today?

USER: I need to book a ticket from ATL to LGA. Could you book a ticket?

ASSISTANT: Can I have your trip dates?

USER: Departure date is Mar, 27 and return by Mar, 29.

ASSISTANT: Do you need any connection limit?

USER: I would prefer connecting flight.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: May I know your name?

USER: William Carter.

ASSISTANT: American Airlines is providing direct flight on this route with a ticket fare of 200 and flight departs at 18:00 hours and arrives at 10:00 hours, shall I book your ticket in this flight?

USER: Please book a ticket.

ASSISTANT: Your ticket is reserved in flight 1000.

USER: Thank you.

ASSISTANT: Thank you for choosing us.