Put your twitter keys in this and run node. DO IT

garthbot.js

var Twitter = require('twitter');   
var client = new Twitter({
    consumer_key: '',
    consumer_secret: '',
    access_token_key: '',
    access_token_secret: ''
  });
    
var stream = client.stream('statuses/filter', {track: 'Garth Brooks'});
stream.on('data', function(event) {
    let sn = event.user.screen_name;
    client.post('statuses/update', {status: `
        Hey, @${sn}
        When I think of things I wanna post, 
        I wanna post cool stuff, slick stuff, neat stuff 
        but mostly its just gonna be raw` },  function(error, tweet, response) {
        if(error) throw error;
      });
});

stream.on('error', function(error) {
 console.log(error)
});