Update app.py

app.py

@@ -16,7 +16,7 @@ MAX_HISTORY_TURNS = int(os.getenv("MAX_HISTORY_TURNS", "3"))
 N_THREADS = int(os.getenv("N_THREADS", str(max(1, os.cpu_count() or 1))))
 DEFAULT_SYSTEM_PROMPT = os.getenv(
     "SYSTEM_PROMPT",
-    "You are a helpful assistant. Keep answers clear and concise.",
+    "You are a helpful assistant. Keep answers clear and concise. You should answer with Korean.", 
 )
 
 PRESETS = {