Find the booking start date and end date for the apartments that have more than two bedrooms.
return apartments ;return bedrooms in #1 ;return number of  #2 for each  #1 ;return #1 where #3 is  higher than two ;return booking start dates of  #4 ;return booking end dates of  #4 ;return #5 ,  #6
['select', 'project', 'group', 'comparative', 'project', 'project', 'union']