Salmon Corn Chowder

Name: Salmon Corn Chowder
Ingredients: 1/4 cup butter; 1 large onion, chopped; 1 cup celery, diced; 1 garlic clove, minced; 2 tablespoons flour; 3 1/2 cups chicken broth; 2 cups half-and-half; 17 ounces cream-style corn; 1/2 teaspoon salt; 1/4 teaspoon white pepper; 15 1/2 ounces salmon (drained and flaked if using canned); parsley, chopped (to garnish)