change model `openai/gpt-oss-20b`

app.py

@@ -23,7 +23,7 @@ def download_sqlite_db(url, local_filename='travel.sqlite'):
 
 # Initialize the language model
 llm = ChatGroq(
-    model="llama3-8b-8192",
+    model="openai/gpt-oss-20b",
     api_key=GROQ_API_KEY,
     temperature=0.1,
     verbose=True