A very basic example of using Tracery to create dialogue

traceryDialogue.js

// Create two Tracery objects
var tracery = require("tracery-grammar");

// Create a Person class
function Person(id) {
  
  this.id = id;
  
  this.say = function(words) {
    console.log(id + ": " + words);
  }
}

// Create two simple people objects
var personA = new Person("A");
var personB = new Person("B");

var symbols = {
  "like": ["benches", "trees", "grass"]
};

// Create a grammar
var grammar = tracery.createGrammar(symbols);

// Set what they like
personA.like = grammar.flatten("#like#");
personB.like = grammar.flatten("#like#");

personA.say("I like " + personA.like + ".");

if(personA.like == personB.like) {
  personB.say("I also like " + personA.like);
} else {
  personB.say("I don't like that. I like " + personB.like + ".");
}