Update app.py

app.py

@@ -27,7 +27,7 @@ pinecone_key = os.environ['PINECONE_API_KEY']
 pinecone_environment='us-west1-gcp-free'
 
 
-user_db = {os.environ['username1']: os.environ['password1'], os.environ['username2']: os.environ['password2'],}
+user_db = {os.environ['username1']: os.environ['password1'], os.environ['username2']: os.environ['password2'], os.environ['username3']: os.environ['password3']}
 
 messages = [{"role": "system", "content": 'You are a helpful assistant.'}]