You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you for today?

USER: Can you please help me to book a flight from SFO to reach DCA?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: My planned dates are on Mar 24th to 26th.

ASSISTANT: Are you looking for a connecting flight or direct flight?

USER: I need a connected flight.

ASSISTANT: Do you have any class preferences?

USER: No.

ASSISTANT: Do you have any other requirements that you are looking for?

USER: No.

ASSISTANT: Can you please provide your name to proceed further?

USER: Sure, my name is Dennis Young.

ASSISTANT: There is a connecting flight with ticket fare 200 in Frontier airlines in business class. Is it ok for you?

USER: Ok, you can proceed.

ASSISTANT: Your booking is confirmed with flight number 1004. Depart time is 11:00 hours and arrival time is 3:00 hours.

USER: Thank you.

ASSISTANT: Thank you for contacting us, have a nice day.