How to make a seat teleporter which is not going to be able to teleport when someones on the seat?

local TeleTo = game.Workspace.oturak --What part you teleport to.

function OnTouched(part) part.Parent:MoveTo(TeleTo.Position) end

script.Parent.Touched:connect(OnTouched)

I have this script so how can i make it to teleport to the seat but not teleport when someones on the seat