BedScript with NameLabelGui

local Bed = script.Parent
local billboard = Bed:FindFirstChild("NameGui")
local claimSeat = Bed:FindFirstChild("Seat") -- seat part
local ownerName = nil

local function claimBed(player)
    if not ownerName then
        ownerName = player.Name
        player:SetAttribute("IsOnBed", true) -- set player is on bed to true
        if billboard then
            billboard.nameLabel.Text = ownerName
            billboard.Enabled = true
        end
    end
end

claimSeat:GetPropertyChangedSignal("Occupant"):Connect(function()
    local Humanoid = claimSeat.Occupant
    if not Humanoid then
        return
    end

    local Character = Humanoid.Parent
    local player = game.Players:GetPlayerFromCharacter(Character)
    if player then
        if not ownerName and not player:GetAttribute("IsOnBed") then
            claimBed(player)
        end
    end
end)