Java

class Lunch {
    public Customer customer;
    public Employee employee;
    void order(String foodName) {
        this.customer.placeOrder(foodName, employee);
    }
    void result() {
        this.customer.printFood();
    }
}

class Customer {
    private Food food = null;
    void placeOrder(String foodName, Employee employee) {
        this.food = employee.takeOrder(foodName);
    }
    void printFood() {
        System.out.println(this.food.name);
    }
}

class Employee {
    Food takeOrder(String foodName) {
        return new Food(foodName);
    }
}

class Food {
    public String name;
    public Food(String name) {
        this.name = name;
    }
}