Update app.py

app.py

@@ -32,7 +32,7 @@ def format_prompt(message, history, cust_p):
     prompt = ""
     if history:
         for user_prompt, bot_response in history:
-            prompt += f"<start_of_turn>user{user_prompt}<end_of_turn>"
+            prompt += f"<bos><start_of_turn>user{user_prompt}<end_of_turn>"
             prompt += f"<start_of_turn>model{bot_response}<end_of_turn>"
             if VERBOSE==True:
                 print(prompt)