Amazon Alexa Skill using node.js

Very small Amazon Alexa skill project in node.js. the project is already live and you can access it by providing you an amazon developer login or i can invite you to amazon developer interface if you have already one. The project is very simple i need to Trigger a different tree decision (see sample .js file) based on user spoken word. i will write the words that will trigger the intent , and also i will write all the decision tree files. I need from you a function to handle the intent. the intent listens for specific words that are listed in a separate file , depending if the user says one of the included words a new tree decision is started, if alexa doesn't recognised any word then a help function is started choosing in random some of the words from this file prompting the user to say one of this. I will explain in detail everything , presumably if you know only node.js you can complete this project very very fast.