Chicken Wild Rice Soup

Name: Chicken Wild Rice Soup
Prep time: 20 min
Cook time: 30 min
Total time: 50 min
Cuisine: American
Ingredients: 1 Tablespoon olive oil; 4 stalks chopped celery; 1 cup chopped carrots; 1 medium chopped yellow onion; 4 cloves minced garlic; 1 pound chicken breast; 1 teaspoon salt (more or less to taste); 3/4 teaspoon black pepper (more or less to taste); 2 teaspoons dried oregano; 2 bay leaves; 5 cups low sodium chicken broth; 2 cups whole milk (divided); 1 cup heavy cream (divided); 6 ounces long grain & wild rice with seasoning packet; 1/4 cup all-purpose flour