<prompt> Human: I signed paperwork for a used car yesterday. Im supposed to pick it up next Saturday. I changed my mind and now I want to buy a new car. Can I go back and ask them to change it? Ill be spending nearly twice as much money. The dealership is closed Sunday, so Id have to go on Monday.  <response>: now I want to buy a new car.Change your mind again and stay with the used. New cars are usually a money pit and a vanity purchase. 