diff --git a/lab-python-functions.ipynb b/lab-python-functions.ipynb
index 44d337b..fc91a59 100644
--- a/lab-python-functions.ipynb
+++ b/lab-python-functions.ipynb
@@ -43,11 +43,101 @@
     "\n",
     "\n"
    ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "b949e30f",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "def manage_orders():\n",
+    "    def initialize_inventory(products):\n",
+    "        inventory = {}\n",
+    "\n",
+    "        for product in products:\n",
+    "            quantity = input(f\"Enter quantity of {product}: \").strip()\n",
+    "            \n",
+    "            while not quantity.isdigit():\n",
+    "                print(\"Please enter a number\")\n",
+    "                quantity = input(f\"Enter quantity of {product}: \").strip()\n",
+    "\n",
+    "            quantity = int(quantity)\n",
+    "            inventory[product] = quantity\n",
+    "                \n",
+    "        return inventory\n",
+    "\n",
+    "    def get_customer_orders():\n",
+    "        customer_orders = set()\n",
+    "\n",
+    "        while True:\n",
+    "            order = input('Enter the name of the product to purchase: ').strip().lower()\n",
+    "                \n",
+    "            while order not in products:\n",
+    "                print (f\"'{order}' is not in our inventory. Please write it correctly.\")\n",
+    "                order = input('Enter the name of the product to purchase: ').strip().lower()\n",
+    "                \n",
+    "            customer_orders.add(order)\n",
+    "\n",
+    "            validation = input(\"Do you want to buy more items? (yes/no): \").strip().lower()\n",
+    "\n",
+    "            while validation not in (\"no\", \"yes\"):\n",
+    "                print(f\"'{validation}' is not a correct option. Please select 'yes' or 'no'.\")\n",
+    "                validation = input(\"Do you want to buy more items? (yes/no): \").strip().lower()\n",
+    "\n",
+    "            if validation == \"no\":\n",
+    "                break\n",
+    "\n",
+    "        print (f\"The customer has ordered {customer_orders}\" \"\\n\")\n",
+    "        return customer_orders\n",
+    "\n",
+    "    def update_inventory(customer_orders,inventory):\n",
+    "        for item in customer_orders:\n",
+    "            inventory[item] -= 1\n",
+    "        return inventory\n",
+    "\n",
+    "    def calculate_order_statistics(customer_orders,products):\n",
+    "\n",
+    "        total_products_ordered = len(customer_orders)\n",
+    "        percentage_ordered = round((total_products_ordered/len(products))*100,1)\n",
+    "\n",
+    "        return total_products_ordered, percentage_ordered\n",
+    "\n",
+    "    def print_order_statistics(order_statistics):\n",
+    "\n",
+    "        total_products_ordered, percentage_of_products_ordered = order_statistics\n",
+    "        print(\"------Order Statistics------\")\n",
+    "        print(f\"Total products ordered: {total_products_ordered}\")\n",
+    "        print(f\"Percentage of products ordered: {percentage_of_products_ordered}%\")\n",
+    "\n",
+    "    def print_updated_inventory(inventory):\n",
+    "        print(\"------Updated inventory------\")\n",
+    "        for key,value in inventory.items():\n",
+    "            print(f\"The current quantity of item '{key}' is: {value}\")\n",
+    "\n",
+    "    products = [\"t-shirt\", \"mug\", \"hat\", \"book\", \"keychain\"]\n",
+    "\n",
+    "    inventory = initialize_inventory(products) \n",
+    "    print (\"Available products\", products)\n",
+    "    print()\n",
+    "    customer_orders = get_customer_orders()\n",
+    "    inventory = update_inventory(customer_orders, inventory)\n",
+    "    order_statistics = calculate_order_statistics(customer_orders,products)\n",
+    "    print_order_statistics(order_statistics)\n",
+    "    print()\n",
+    "    print_updated_inventory(inventory)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "703a979d",
+   "metadata": {},
+   "source": []
   }
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 3 (ipykernel)",
+   "display_name": "Python 3",
    "language": "python",
    "name": "python3"
   },
@@ -61,7 +151,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.13"
+   "version": "3.14.4"
   }
  },
  "nbformat": 4,