How use brainjs to create chatbot?

I trying to use brainjs to make a simple chatbot.

var brain = require('brain.js');
var net = new brain.recurrent.LSTM();
var user_messages = [
  {id: 1, message: "Hello"},
  {id: 2, message: "Tudo bem?"},
  {id: 3, message: "Voce gosta da Arvore?"},
  {id: 4, message: "voce manja de machine learning?"},
  {id: 5, message: "Voce é um robo?"},
  {id: 6, message: "robo?"},
]

var bot_messages = [
  {id: 1, message: "Tranquilo?"},
  {id: 2, message: "Sim!"},
  {id: 3, message: "Eu sou O robo ;)"},
  {id: 4, message: "Tudo otimo"},
  {id: 5, message: "Manjo até demais"},
]

net.train([{input: [1], output: [1]},
           {input: [2], output: [4]},
           {input: [3], output: [2]},
           {input: [4], output: [5]},
           {input: [5], output: [3]},
          ]);

for (var i = 0; i < user_messages.length; i++) {
  usermessage = user_messages[i];
  
  //Humano fala
  console.log("Human:", usermessage.message)
  var output = net.run([usermessage.id]);
  
  console.log("output: ", output)
  //Robo responde
  for (var j = 0; j < bot_messages.length; j++) {
    if (bot_messages[j].id == output) {
      console.log("Bot:", bot_messages[j].message)
    }
  }
}

I know, I train to check ID’s and not match words. But what I need do to train with messages or match words?

[SISheogorath]

The answer is simple: You need more training data.

I already worked on something similar but you need a few thousand training elements or even more to make sure the AI notices the difference. Keep in mind that your neuronal network starts with an empty mind. knowing nothing about language. Doesn’t even know that characters exist.

So when you want to build up a context based on the content of a sentence you have to provide all needed data to make sure the neuronal network get’s the difference and not simply uses any word or the string length, to calculate its answer.

[Iazzetta]

Thanks!