diff --git a/lab-python-flow-control.ipynb b/lab-python-flow-control.ipynb
index f4c7391..bff20d1 100644
--- a/lab-python-flow-control.ipynb
+++ b/lab-python-flow-control.ipynb
@@ -37,11 +37,136 @@
     "\n",
     "3. Instead of updating the inventory by subtracting 1 from the quantity of each product, only do it for  the products that were ordered (those in \"customer_orders\")."
    ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 1,
+   "id": "927bdee9",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "products = [\"t-shirt\", \"mug\", \"hat\", \"book\", \"keychain\"]"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 2,
+   "id": "83ac8269",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "inventory = {}"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 3,
+   "id": "f29beb58",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "for product in products:\n",
+    "    quantity = int(input(f\"Enter quantity for {product}: \"))\n",
+    "    inventory[product] = quantity"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 4,
+   "id": "83e81a4e",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "customer_orders = set()"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 5,
+   "id": "50c20d75",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "while True:\n",
+    "    order = input(\"enter the name of a product the customer wants : \"). lower()\n",
+    "\n",
+    "    if order in products:\n",
+    "        customer_orders.add(order)\n",
+    "    else:\n",
+    "        print(\"that product does not exist in the store.\") \n",
+    "    \n",
+    "    another = input(\"do you want to order another product? (yes/no) : \"). lower()\n",
+    "\n",
+    "    if another == \"no\":\n",
+    "        break   "
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 6,
+   "id": "3b9eca2f",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "for product in customer_orders:\n",
+    "    if inventory[product] > 0:\n",
+    "        inventory[product] -= 1\n",
+    "    else:\n",
+    "        print(f\"{product} is out of stock.\")"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 7,
+   "id": "4fef393f",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "customer_orders:\n",
+      "mug\n",
+      "book\n",
+      "t-shirt\n"
+     ]
+    }
+   ],
+   "source": [
+    "print(\"customer_orders:\")\n",
+    "for product in customer_orders:\n",
+    "    print(product)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 8,
+   "id": "bc20abbf",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "inventory:\n",
+      "t-shirt: 9\n",
+      "mug: 7\n",
+      "hat: 6\n",
+      "book: 11\n",
+      "keychain: 4\n"
+     ]
+    }
+   ],
+   "source": [
+    "print(\"inventory:\")\n",
+    "for product in inventory:\n",
+    "    print(f\"{product}: {inventory[product]}\")"
+   ]
   }
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 3 (ipykernel)",
+   "display_name": "base",
    "language": "python",
    "name": "python3"
   },
@@ -55,7 +180,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.13"
+   "version": "3.13.9"
   }
  },
  "nbformat": 4,