You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: Please help me to book a flight ticket from DCA to LAX.

ASSISTANT: Please provide your trip dates.

USER: My travel dates are 09 to 11 of Aug.

ASSISTANT: Do you need any connection limit?

USER: I need a connecting flight.

ASSISTANT: Do you need any other specifications?

USER: No.

ASSISTANT: May I know your name?

USER: I am Daniel Smith.

ASSISTANT: American Airlines is providing connecting flight on this route with a ticket fare of 200 and flight departs at 2:00 hours and arrives at 0:00 hours, shall I book your ticket in this flight?

USER: Please proceed to booking.

ASSISTANT: Your ticket is confirmed in flight 1004.

USER: Thank you.

ASSISTANT: Thank you for choosing us.