When I had this problem, I took my puppy and a roll of paper towels to the nearest Pet Super Market. I spoke to shoppers as they came in and told them what I was trying to do and asked them to greet and pet my puppy. If she wet on the floor, I ignored it , cleaned it up and went on. If she did not pee, I praised and rewarded her. It took about 2 weeks, but she was "cured".