Chicken and Rice Chowder

Name: Chicken and Rice Chowder
Ingredients: 4 1⁄2 cups chicken broth; 1⁄2 cup water; 3 boneless skinless chicken breasts, cooked and chopped; 2 teaspoons thyme; salt and pepper; 1⁄2 cup brown rice; 1 tablespoon olive oil; 4 garlic cloves, pressed; 1 large onion, chopped; 2 carrots, chopped; 1 stalk celery, chopped; 3 tablespoons flour; 1 1⁄2 cups low-fat milk