You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Can you help me in doing a reservation from DEN to DCA?

ASSISTANT: May I know your trip dates?

USER: My journey dates are Oct 25 to 27.

ASSISTANT: Do you have any connecting limit preferences?

USER: I need a connecting flight.

ASSISTANT: May I know your name please?

USER: I am Sarah Roberts.

ASSISTANT: American Airlines is providing connecting flight with the ticket fare of 200 and depart time is 00:00 hours, arrival time is 23:00 hours. Shall I proceed?

USER: Ok, please proceed.

ASSISTANT: Ok, your ticket is reserved in an economy class and the flight number is 1002.

USER: Thank you.

ASSISTANT: Thank you for choosing us.