Companion Care Needed

I'm looking for a someone to provide overnight care every Saturday and Sunday from 8:00 p.m. to 8:00 a.m. My father is 90 years old and suffers from dementia. He uses a walker and needs assistance getting to and from the bathroom during the night, along with reminders and guidance once he gets there. The caregiver would also help him get ready for bed in the evening and get him up in the morning.