How do I get a close button to close multiple Gui pop-ups?

Basically what I'm talking about is I have a Gui that pops up for a piece of dialogue, and then closes and again pops up with new text, how do I get this script to close that Gui, then close the next one that pops up a few moments later. Also this is the script I'm using to close the GUI out once.

script.Parent.MouseButton1Down:Connect(function()
 script.Parent.Parent.Visible = false
end) 

If you have any questions, you can DM at rebloom#9167.