You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: James Smith here.

ASSISTANT: How may I aid you?

USER: Can you please help me in booking my flight from IAD to reach BOS?

ASSISTANT: Sure, I am here to help you. Can you please share your travel dates?

USER: Sure, my planned travel dates are Apr 19th and 21st.

ASSISTANT: May I know your connection limit?

USER: I prefer a single connecting flight.

ASSISTANT: Do you have any specific depart and arrival time?

USER: I would like to return in the afternoon time.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: Ok, please wait for a moment.

USER: Ok, sure. I will wait for your quick response.

ASSISTANT: Spirit airlines is providing you a flight with a ticket fare 600 which departs at 6:00 AM and return at 18:00 PM, shall I proceed with booking?

USER: Ok, please proceed by booking.

ASSISTANT: Your ticket is confirmed with the flight-1020 in business class.

USER: Thank you for the great service.

ASSISTANT: Welcome, have a safe trip.