diff --git a/notebook/agentchat_langchain.ipynb b/notebook/agentchat_langchain.ipynb
index f1eac5f49351..a756bc3afd12 100644
--- a/notebook/agentchat_langchain.ipynb
+++ b/notebook/agentchat_langchain.ipynb
@@ -205,6 +205,7 @@
         "from langchain.tools import BaseTool\n",
         "from typing import Optional, Type\n",
         "import math\n",
+        "import os\n",
         "\n",
         "class CircumferenceToolInput(BaseModel):\n",
         "    radius: float = Field()\n",
@@ -215,7 +216,22 @@
         "    args_schema: Type[BaseModel] = CircumferenceToolInput\n",
         "\n",
         "    def _run(self, radius: float):\n",
-        "        return float(radius) * 2.0 * math.pi"
+        "        return float(radius) * 2.0 * math.pi\n",
+        "    \n",
+        "def get_file_path_of_example():\n",
+        "    # Get the current working directory\n",
+        "    current_dir = os.getcwd()\n",
+        "\n",
+        "    # Go one directory up\n",
+        "    parent_dir = os.path.dirname(current_dir)\n",
+        "\n",
+        "    # Move to the target directory\n",
+        "    target_folder = os.path.join(parent_dir, \"test\")\n",
+        "\n",
+        "    # Construct the path to your target file\n",
+        "    file_path = os.path.join(target_folder, \"test_files/radius.txt\")\n",
+        "    \n",
+        "    return file_path"
       ]
     },
     {
@@ -355,7 +371,7 @@
         "\n",
         "user_proxy.initiate_chat(\n",
         "    chatbot,\n",
-        "    message=\"Read the file with the path 'Test.txt', then calculate the circumference of a circle that has a radius of that files contents.\", #\" 7.81mm\" in the file\n",
+        "    message=f\"Read the file with the path {get_file_path_of_example()}, then calculate the circumference of a circle that has a radius of that files contents.\", #7.81mm in the file\n",
         "    llm_config=llm_config,\n",
         ")"
       ]
diff --git a/test/test_files/radius.txt b/test/test_files/radius.txt
new file mode 100644
index 000000000000..e69a5131fd4f
--- /dev/null
+++ b/test/test_files/radius.txt
@@ -0,0 +1 @@
+7.81mm