Wx2

local NPCID = 76668 ---> The NPC ID here!

function Talent_OnGossip(Unit, event, player)
        Unit:GossipCreateMenu(3544, player, 0)
        Unit:GossipMenuAddItem(0, "Give me 20 talent points", 1, 0)
        Unit:GossipMenuAddItem(4, "Nevermind", 999, 0)
        Unit:GossipSendMenu(player)
end

function Talent_SubMenu(unit, event, player, id, intid, code)

if(intid == 999) then
        Unit:GossipComplete(player)
end

if(intid == 1) then
        Unit:SetTalentPoints(0, 20)
        Unit:SendChatMessage(13, 0, "20 Talents has been added to you!")
        Unit:GossipComplete(player)
        end
end

RegisterUnitGossipEvent(NPCID, 1, "Talent_OnGossip")
RegisterUnitGossipEvent(NPCID, 2, "Talent_SubMenu")