Leftover Turkey Soup

Name: Leftover Turkey Soup
Ingredients: 2 tablespoons extra-virgin olive oil; 1 medium white onion, finely diced; 4 garlic cloves, minced; 1 teaspoon dried thyme; 3 medium carrots, peeled and finely diced; 3 celery sticks, finely diced; 1/4 cup all-purpose flour; 1 (32-ounce) box low-sodium chicken or turkey stock (or homemade); 2 pounds cooked turkey meat, shredded or cut into large chunks (about 4 cups); Kosher salt; Freshly ground black pepper; Chopped flat-leaf parsley, lemon wedges, and red pepper flakes, for garnish