private double calculateOrderPrice(String[] selectedDishes, List<AvailableDish> availableDishs) {
        double price = 0;
        for (String selectedDish : selectedDishes) {
            for (AvailableDish availableDish : availableDishs) {
                if (selectedDish.equals(availableDish.getDishName())) {
                    price += availableDish.getDishPrice();
                }
            }
        }
        return price;
    }