You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am David Hall.

ASSISTANT: David Hall, how may I assist you today?

USER: Please book a flight ticket to New York on June 12th and return on June 14th.

ASSISTANT: Sure, I will help you. Just to confirm, may I know with your in and out airport codes please?

USER: I am heading to JFK from PHL.

ASSISTANT: David Hall, do you need a direct or connecting flight?

USER: I need a connecting flight.

ASSISTANT: May I know with your class preference to travel please?

USER: I am comfortable with any class.

ASSISTANT: We have a connecting flight operated by Spirit Airlines, with a fare of 100. Is it ok for you?

USER: Yes, proceed with the booking.

ASSISTANT: I have booked you ticket in flight-1009.

USER: Thank you.

ASSISTANT: Thank you for reaching us. Have a safe trip.