How to make several outputs in onIntent nlp.js node.js webchat bot

help, please! i have a task to output several messages in a row in bot like that:

P: hello
Bot: Good
Bot: Morning!

but i can't find way how to make 'output.answer' do it

There is a code

main();

async function main() {
  const dock = await dockStart();
  const nlp = dock.get('nlp');
  await nlp.train();

  webchatChannel(nlp);
}

function webchatChannel(nlp) {
  nlp.onIntent = async (nlp, input) => {
    try {
      if (input.intent === 'greetings.hello') {

        const hours = new Date().getHours();
        const output = input;

        if(hours < 12) {
            output.answer = 'Good morning!'     
        } else if(hours < 17) {
            output.answer = 'Good afternoon!';
        } else {
            output.answer = 'Good evening!';
        }
        return output;
    }
    return input;

    } catch (e) {
      console.log("*** ERROR attachWebsiteChannel ***", e, e.stack);
      input.answer = "Something is wrong, please reload the page and try again later";
    }
  };
}