Babysitter - Full-time / Part-time

We are looking for a great babysitter for 2 children in Saint Louis. We would prefer someone who could help out with homework help. We would prefer a babysitter who has their own car, who does not smoke and who is CPR certified. I will need the children picked up and possibly taken to sports/activities. If nothing is going on that day, then you all can go home. I work 3 days out the week, minimum.