Update app.py

app.py

@@ -47,7 +47,7 @@ tokenizer = AutoTokenizer.from_pretrained(MODELS)
 def stream_chat(message: str, history: list, temperature: float, max_new_tokens: int, top_p: float, top_k: int, penalty: float):
     print(f'message is - {message}')
     print(f'history is - {history}')
-    conversation = []
+    conversation = [{"role": "system", "content": 'You are a helpful assistant. Answer in proper Vietnamese.'}]
     for prompt, answer in history:
         conversation.extend([{"role": "user", "content": prompt}, {"role": "assistant", "content": answer}])
     conversation.append({"role": "user", "content": message})