It’s not quite Rosie the robot from the Jetsons, but tandem hotels that opened recently near Dallas’ Love Field are using a hip-high robot to deliver to guest rooms a range of items including snacks, sodas and extra towels. The Botlr robot was on display Thursday as part of a ribbon cutting ceremony for the co-branded Aloft and Element hotels in the 37-acre West Love development on Mockingbird Lane.