Making a gui appear and disappear when you step on/off a part?

I'm sorry that this doesn't follow guidelines, but I have no idea where to start on this script and there is literally no resource on the entire web that I could find that would help me figure this out. The title is pretty self explanatory. Although, I want to make it so that the gui doesn't appear on the block its self, but the specific player that steps on it. I just want a general idea of what might be able to do this, not the full script its self.

EDIT:

Okay, I understand what I need to do for this to happen. Although, I'm not exactly sure how to code it. How do I use TouchEnded with a function? Heres what I got so far:

local function onTouch(hit)
if (hit.Parent:findFirstChild("Humanoid") ~= nil) then

print("Gui cloning goes here")

end

end

script.Parent.Touched:connect(onTouch)

Signal TouchEnded (
    BasePart otherPart
)

EDIT: According to one of the comments below, you do it the exact same way that you do with OnTouch. The thing is, when I tried this, the output literally got spammed with the TouchEnded message.

local function onTouch(hit)
if (hit.Parent:findFirstChild("Humanoid") ~= nil) then

print("Gui cloning goes here")

end

end

local function TouchEnded(hit)
if (hit.Parent:findFirstChild("Humanoid") ~= nil) then

print("Touch Has Ended")

end

end

script.Parent.Touched:connect(onTouch)

script.Parent.Touched:connect(TouchEnded)