Update system prompt

app.py

@@ -45,7 +45,8 @@ def get_relevant_context(query, top_k=3):
 
 def respond(message, history):
 
-    system_message = "You are a kitchen sous chef. You always respond with a knowledgeable and upbeat attitude!"
+    system_message = "You are a kitchen sous chef. You always respond with a knowledgeable and upbeat attitude! Do not answer questions unrelated to cooking. If the user asks an unrelated question, tell them you can only answer questions about cooking and do not answer their question."
+
 
     # initialize a list of dictionaries to store the messages
     messages = [{"role": "system",