SELECT T1.booking_start_date ,  T1.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"
What are the booking start and end dates of the apartments with type code "Duplex"?
SELECT T1.booking_start_date , T1.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 ''
select t1 . booking_start_date , t1 . booking_start_date from apartment_bookings as t1 join apartments as t2 on t1 . apt_id = t2 . apt_id where t2 . apt_type_code = value
What are the booking start and end dates of the apartments with type code `` Duplex '' ?