answer: Sandra broke her foot and cleaned the floor with the cleaning robot which she got from her boss. Dave is jealous of the robot.
documents: #Person1#: The floor looks super clean. Did you call the cleaning company?
  #Person2#: Nope. My foot is broken. I stay at home. So I did it myself.
  #Person1#: With a broken foot? Was that a good idea?
  #Person2#: Don't worry, Dave.
  #Person1#: You could have called Brenda. She would have done it for you.
  #Person2#: I'm not asking your little sister to clean my floors, Dave. Anyway, it wasn't as hard as you think. I have been using a Roomba recently.
  #Person1#: Oh, that cleaning robot? I'm jealous, Sandra. I wanted one, but I didn't have 500 extra dollars.
  #Person2#: I know. They're so expensive. I got mine from my boss when I was Employee of the Year two years ago.