Dog Walker Needed For Adorable Golden Retriever

Charlie, Golden Retriever, age 7. Charlie is gentle and loving, and a huge people person (dog). He loves treats, attention, and being pet/rubbed more than anything. I'm looking for someone to walk/play with him for an hour while I'm at work for a couple days a week, potentially adding more days per week. I'm willing to be flexible on hours and days worked. He needs lots of love, attention, and pets. He can be dog aggressive at times so I try and keep him away from other dogs when we are on walks.