I didn't respond because your post didn't give any real info...until yesterday.
Slipping is commonly from low fluid. Then you mentioned you knew you had low fluid. Seems like an easy problem to fix. Stop posting and properly fill the trans.
Then you say something about dots. This makes me wonder, what year/model you drive. On the 97-03's ..I don't recall seeing any dots on a trans dipstick tube.
Help us help you man..