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

   tellMyName(){
     return `I am ${this.name},`
   }

   tellMyAge(){
     return `I am ${this.age} years old.`;
   }
 }

const firstPerson = new Person("John", 40);
console.log(firstPerson.tellMyName(), firstPerson.tellMyAge())
const secondPerson = new Person("Mary", 35);
console.log(secondPerson.tellMyName(), secondPerson.tellMyAge())