updated instructions

app.py

@@ -1,5 +1,5 @@
 from smolagents import CodeAgent,DuckDuckGoSearchTool, HfApiModel,load_tool,tool
-from datetime import datetime
+import datetime
 import requests
 import pandas as pd
 import pytz
@@ -13,8 +13,10 @@ from Gradio_UI import GradioUI
 @tool
 def fetch_historical_price_data(symbol: str, start_date: str) -> list[dict]:
     """
-    Fetch daily historical stock price data for a given stock symbol between start_date and end_date. Use
-    toda=datetime.now() to confirm the dates are valid dates prior to calling the API.
+    Fetch daily historical stock price data for a given stock symbol from the start_date. Use
+    toda=datetime.now() to confirm the start_Date is valid prior to calling the API. You only need to make sure 
+    the start_date is not greater than today's date. If it is equal to today's date you can send today's date as the API 
+    will output the stock price information for the day.
 
     Args:
         symbol: Stock market symbol such as 'AAPL', 'MSFT', 'NVDA'