Claudia Bot Builder Facebook joke bot : https://cedricleruth.com/how-to-build-a-facebook-chatbot-aws-lambda-and-claudia-js-bot-builder/

ClaudiaBotBuilderJokeBot.js

const botBuilder = require("claudia-bot-builder");
const fbTemplate = botBuilder.fbTemplate;

//to install run 'npm i sync-request' in the project folder terminal
var request = require("sync-request");
//to install run 'npm i keyword-extractor' in the project folder terminal
var keywordExtractor = require("keyword-extractor");

//function to query the really nice icanhazdadjoke API for a joke
function getJoke(keyword) {
	var res = request("GET", "https://icanhazdadjoke.com/search", {
		headers: {
			Accept: "text/plain"
		},
		qs: { term: String(keyword), limit: "1" }
	});
	return res.getBody("utf8");
}

function getRandomJoke() {
	var res = request("GET", "https://icanhazdadjoke.com/", {
		headers: {
			Accept: "text/plain"
		}
	});
	return res.getBody("utf8");
}

module.exports = botBuilder(message => {
	if (message.type === "facebook") {
		//  Extract the keywords from the user typed message
		var keywords = keywordExtractor.extract(message.text, {
			language: "english",
			remove_digits: true,
			return_changed_case: true,
			remove_duplicates: true
		});
		//get the last typed keyword that we can use
		let keyword = keywords[keywords.length - 1];
		if (keyword && (keyword.toUpperCase() === "JOKE" || keyword.toUpperCase() === "JOKES")) {
			keyword = keywords[keywords.length - 2];
		}
		if (keyword) {
			// get joke from the last found keywords
			let resultJoke = getJoke(keyword);
			if (resultJoke) {
				// return the response animated
				return ["Hum do I have a joke about " + keyword + "...", new fbTemplate.ChatAction("typing_on").get(), new fbTemplate.Pause(500).get(), resultJoke];
			} else {
				let randomJoke = getRandomJoke();
				return ["Well i couldn't find a joke about " + keyword + " so here is a random joke : ", new fbTemplate.ChatAction("typing_on").get(), new fbTemplate.Pause(300).get(), randomJoke];
			}
		} else {
			return [new fbTemplate.ChatAction("typing_on").get(), new fbTemplate.Pause(300).get(), "Brrrr, what was that ? I don't understand those gimish ! Could you try something else ? "];
		}
	}
});