You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am George Miller. Can you please help me in booking a flight ticket from BOS to JFK?

ASSISTANT: Sure, could you please share your departure and arrival day?

USER: I would like to fly on Sept 19 and return on Sept 21.

ASSISTANT: Do you have any class preferences?

USER: No.

ASSISTANT: There is a connecting flight-1020 on economy class, shall I confirm it?

USER: You can proceed to booking.

ASSISTANT: Ok, booking is done on Spirit airlines.

USER: Thank you.

ASSISTANT: Thank you for choosing us.