class Person {
    constructor(name, age) {
        this.name = name;
        this.age = age;
    }

    tellMyName() {
        console.log(`I am ${this.name}`);
    }

    tellMyAge() {
        console.log(`I am ${this.age}`);
    }
}

const john = new Person('John', '40');
john.tellMyName();
john.tellMyAge();

const mary = new Person('Mary', '35');
mary.tellMyName();
mary.tellMyAge();