[morphios]

let garray = ["Hi. ", "Hello. ", "Good day. ", "Greetings. ", "Salutations. "];
let carray = [
  "Welcome, and I hope you enjoy your stay.",
  "Welcome, Its great to have you.",
  "Thank you for joining the community.",
  "Its always nice to add onto the community, I hope you like it here.",
  "The user you have dialled is unavailable at the moment, please try again later."
];
let greeting = garray[Math.floor(Math.random() * garray.length)];
let conversation = carray[Math.floor(Math.random() * carray.length)];

alert(greeting + conversation);

I seriously cant be the only one who wanted to do that when reading the headline "Hello World"