making a confirm purchase GUI?

so i made this buyable house, wich works fine, but i want it so when the player clicks the door a GUI pops up saying like "are you sure you want to buy this house?" and i have a "no" button, but i don't know how to make the yes button work, so whenever you press the yes button, the menu dissapears and the home is yours.

the script that is inside the yes button, the yes button is inside a frame, frame inside a screenGUI and the ScreenGUI inside a Door part.

houseprice = script.Parent.Parent.Parent.Parent:WaitForChild("Price")
currentowner = script.Parent.Parent.Parent.Parent:WaitForChild("CurrentOwner")
script.Parent.ClickDetector.MouseClick:Connect(function(player)
	if player:FindFirstChild("leaderstats") and player.Name ~= currentowner.Value and currentowner.Value == "" then
		-- we know that the player has leaderstats
		if player.leaderstats.Cash.Value >= houseprice.Value then
			script.Parent.Parent.Name = player.Name.."'s House"
			player.leaderstats.Cash.Value = player.leaderstats.Cash.Value - houseprice.Value
			script.Parent.Parent.CurrentOwner.Value = player.Name
		end
	end
end)

Make the buy button open another GUI that says "Are you sure?" Then when you click that button it automatically buys