Babysitter Needed

Looking for a non-smoking babysitter for 1 child in Philadelphia. Looking for help with morning drop off at school and afternoon pick up from school. The morning and afternoon will be a few hours because the morning I need someone to be with my son when I leave for work, which is before his school starts and the afternoon to be with him until I get home from work. Weekends are every other weekend and optional, if you are available to spend a few hours one weekend day with him then great, if not then that's ok too.