e

local function onChatted(player, message)
    if message == "airplane" then
        game:GetService("ReplicatedStorage").Message:FireClient(player, "A huge airplane appears from the sky!")
    end
end

game.Players.PlayerAdded:Connect(function(player)
    player.Chatted:Connect(function(message)
        onChatted(player, message)
    end)
end)