Show the guest first names, start dates, and end dates of all the apartment bookings.
SELECT T2.guest_first_name ,  T1.booking_start_date ,  T1.booking_start_date FROM Apartment_Bookings AS T1 JOIN Guests AS T2 ON T1.guest_id  =  T2.guest_id
guest first names refers to guest_first_name; start dates of all the apartment bookings refers to booking_start_date; end dates of all the apartment bookings refers to booking_end_date; joining tables to match guest IDs refers to JOIN operation on guest_id;