function setup() {
  noCanvas();
  let button = createButton('start');
  button.mousePressed(function() {
    let speech = new p5.Speech();
    let speechRec = new p5.SpeechRec('en-US', gotSpeech);
    let continuous = true;
    let interim = false;
    speechRec.start(continuous, interim);

    let bot = new RiveScript();
    loadBot();

    async function loadBot() {
      await bot.loadFile('brain.rive');
      bot.sortReplies();
    }

    async function gotSpeech() {
      if (speechRec.resultValue) {
        let input = speechRec.resultString;
        let reply = await bot.reply('local-user', input);
        console.log(reply);
        speech.speak(reply);
      }
    }
  });
}