local CooldownTimer = 10 -- seconds
local ChatCommand = "#tele"

local CD = {} -- Cooldown store
local function Command(event, pPlayer, msg, _, _)
    if (msg == ChatCommand) then                   -- check that the message is our command
        local sPlayer = tostring(pPlayer)          -- convert player to a string
        if CD[sPlayer] and os.clock()-CD[sPlayer] <= CooldownTimer then -- Check if the player has a cooldown and if he has waited enough
            pPlayer:SendAreaTriggerMessage("|cFFFF0000You must wait "..CooldownTimer.." seconds before teleporting again!")
        else
            CD[sPlayer] = os.clock()               -- re set the time to the store for the player
            pPlayer:Teleport(map, x, y, z)
        end
        return false                               -- prevent the player from saying #tele ingame
    end
end

RegisterServerHook(16, Command)