diff --git a/openai_agents/run_hello_world_workflow.py b/openai_agents/run_hello_world_workflow.py
index 566d525..76344d8 100644
--- a/openai_agents/run_hello_world_workflow.py
+++ b/openai_agents/run_hello_world_workflow.py
@@ -1,4 +1,5 @@
 import asyncio
+import sys
 
 from temporalio.client import Client
 from temporalio.contrib.pydantic import pydantic_data_converter
@@ -7,6 +8,12 @@
 
 
 async def main():
+    # Get the input string from command line arguments
+    if len(sys.argv) < 2:
+        print("Usage: python run_hello_world_workflow.py <input_string>")
+        sys.exit(1)
+    input_string = sys.argv[1]
+
     # Create client connected to server at the given address
     client = await Client.connect(
         "localhost:7233",
@@ -16,7 +23,7 @@ async def main():
     # Execute a workflow
     result = await client.execute_workflow(
         HelloWorldAgent.run,
-        "Tell me about recursion in programming.",
+        input_string,
         id="my-workflow-id",
         task_queue="openai-agents-task-queue",
     )