instruction: Return the booking start date for the apartments that have type code 'Duplex' and bin the year into weekday interval with a bar chart, and show by the Y in descending.
response: SELECT booking_start_date, COUNT(booking_start_date) FROM Apartment_Bookings AS T1 JOIN Apartments AS T2 ON T1.apt_id = T2.apt_id WHERE T2.apt_type_code = "Duplex" ORDER BY COUNT(booking_start_date) DESC