Chicken enchiladas

Name: Chicken enchiladas
Cuisine: American, Mexican, Latin American
Ingredients: 1 lb chicken; 4 cloves garlic, minced; 1 tsp coriander; 1/2 cup onion, chopped; 2 Tbs butter; 3 Tbs flour; 8 oz sour cream; 2 cups chicken broth; 2 cups shredded cheese, divided; 8 tortillas; Salsa; Avacado; Black olives; Green onions; 1 can Green chilles