Update app.py

app.py

@@ -61,7 +61,7 @@ def calculate_eou(chat_ctx, session):
     return probs[eou_token_id]
 
 # Chatbot logic with EOU
-messages = []
+messages = [{"role": "system", "content": os.environ.get("CHARACTER_DESC", "You are a helpful assistant.")}]
 
 def chatbot(user_input):
     global messages
@@ -71,6 +71,7 @@ def chatbot(user_input):
         messages = []  # Reset conversation history
         return "Chat ended. Refresh the page to start again."
 
+    
     # Add user message to conversation history
     messages.append({"role": "user", "content": user_input})