local npc = new NPC("Chondur") -- Loads default, passes name

---- internally, the npc class should have:
name = "Chondur",

messages = { -- this are default. If you just use new NPC(name) it should automatically loads all this pre-defined
    greet = "Hello %N. How can I help you today?", -- use format to insert playername in %N
    farewell = "Good bye.",
    walkway = "Good bye!",
    trade = "Well, I currently buy mysterious and enigmatic voodoo skulls and a few other things I might need for my rituals.",
    -- you must define all the default messages here
},

keywords = {
    ["rituals"]  = {
        [0] = Hm. I don't think you need another one of my counterspells to cross the barrier on Goroma.",
        [1] = Hm. I don't think you need another one of my counterspells to cross the barrier on Goroma."
    }
},

shop = { -- I suppose you used name because of the actual structure but I've never seen one case where people actually used a different name than the one in ID. (furniture maybe?)
    [id] = {buy = 0, sell = 4000[, count = 1, type = 0, name = ItemType(id):getName(), actionid = 0]} -- parameters inside [] should be optional, the default values should be the ones mentioned. This table has to be parsed through pairs/next.
}
----
-- back to the npc file we should have only this for now:
local npc = new NPC("Chondur")

npc:setMessage("greet", message)
npc:setKeyword("rituals", "Hm. I don't think you need another one of my counterspells to cross the barrier on Goroma."[, topic = 0])
npc:addShopItem(...)
npc:removeShopItem(id)

-- those are basic functions and this way they are very very easy to be set/removed. See an example of how to implement them:
setMessage:
if type == "greet" then
   messages.greet = message
elseif ...

setKeyword:
keywords[type][topic] = message

addShopItem:
shop[id] = ...

removeShopItem:
shop[id] = nil
--

--[[Now for topics in long conversation (what is inside Lua files today) you have to keep it simple and dynamic. Use the keywords to create
conversations using the topics.]]
function onSay(player, message, topic)
topic = topic or 0
 if keywords[message] then
    npc:say(keywords[message][topic])
end

-- here you manipulate topics to move to other topics
if topic == 1 then...
elseif topic == 2 and getStorage...