You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you now?

USER: I want to travel from IAD to DCA. Can you help me to book a flight ticket?

ASSISTANT: Ok, please mention your travelling dates for this journey?

USER: I want to fly in the flight on Sept 27 and Sept 29.

ASSISTANT: Do you need a connecting flight?

USER: I want to have a connection of 1.

ASSISTANT: May I know your class preference?

USER: I prefer business class.

ASSISTANT: Can you please tell your name?

USER: Patrick Jones.

ASSISTANT: Flight-1022 is available for you with business class by Frontier airlines which will depart at 5:00 AM and return at 0:00 AM. Can I book it for you?

USER: Proceed to booking.

ASSISTANT: Your ticket is reserved, thank you for choosing us.

USER: Thank you for your help.

ASSISTANT: Have a safe journey.