@caijs/nlg allow to use declare answers for locales and intents, and retreive a random answer from all that are valid taking account the conditions. Also, the answer will be renderer based on the context and in the option lists.
In your project folder run:
$ npm install @caijs/nlgYou can evaluate an string
const { Container } = require('@caijs/container');
const evaluator = require('@caijs/eval');
const template = require('@caijs/template');
const Nlg = require('@caijs/nlg');
const container = new Container();
container.use(evaluator);
container.use(template);
const nlg = new Nlg({ container });
nlg.add('en','hello','Hello {{ name }} I will eat (melon|orange|apple)', 'type === "eat"');
nlg.add('en', 'hello', 'Hello {{ name }} I will drink (juice|water)','type === "drink"');
const answer = nlg.getAnswer('en', 'hello', { name: 'John', type: 'drink' });
console.log(answer);
// It will return one of those two: "Hello John I will drink juice" or "Hello John I will drink water"