Update app.py

app.py

@@ -1,10 +1,10 @@
 import gradio as gr
 from huggingface_hub import InferenceClient
 
-client = InferenceClient("google/gemma-2-2b-it")
+client = InferenceClient("HuggingFaceH4/zephyr-7b-beta")
 
 def respond(message, history): 
-    messages = []
+    messages = [{"role": "system", "content": "You are a friendly chatbot."}]
     
     if history:
         messages.extend(history)