concatinateFreeFormInput.js

let querySentance = '';
let wordSlots = ["WordI", "WordII", "WordIII", "WordIV", "WordV", "WordVI", "WordVII", "WordVIII", "WordIX", "WordX", "WordXI", "WordXII", "WordXIII", "WordXIV", "WordXV", "WordXVI", "WordXVII", "WordXVIII", "WordIXX", "WordXX", "WordXXI", "WordXXII", "WordXXIII", "WordXXIV", "WordXXV", "WordXXVI", "WordXXVII", "WordXXVIII", "WordIXXX", "WordXXX",];
wordSlots.forEach((word)=>{
    let slot = this.event.request.intent.slots[word];
    if (slot !== undefined && slot.value !== '' && slot.value !== '?' && slot.value !== null && slot.value !== undefined){
        querySentance = querySentance+' '+slot.value;
    }
});