Nanny Needed - Now Hiring

Im looking for a reliable, responsible, and flexible babysitter for occasional help with my children. Most of the time, I would need help while Im running errands or for an occasional weekend evening/date night. My schedule varies from week to week, so Im specifically looking for someone who does not need a set weekly schedule and is comfortable being contacted on an as-needed basis when I need help. Ideally, Im looking for someone who is dependable and trustworthy, has experience caring for children, has a flexible schedule and is comfortable with occasional/last-minute requests when available. Availability during the week days is not a must but a bonus.