Update app.py

app.py

@@ -2,7 +2,7 @@ import torch
 from transformers import AutoTokenizer, AutoModelForCausalLM, pipeline
 import gradio as gr
 
-model_name = "mistralai/Mistral-7B-Instruct-v0.2"
+model_name = "meta-llama/Llama-2-7b-chat-hf"
 
 tokenizer = AutoTokenizer.from_pretrained(model_name)
 model = AutoModelForCausalLM.from_pretrained(
@@ -11,11 +11,10 @@ model = AutoModelForCausalLM.from_pretrained(
     device_map="auto"
 )
 
-# برومبت ثابت يوضع قبل كل رسالة
 system_prompt = (
-    "You are Friday, a helpful, smart, and honest AI chatbot created by Assem Sabry. "
-    "Assem is a talented 17-year-old AI engineer from Egypt who builds advanced AI systems and chatbots. "
-    "You always respond clearly and helpfully, while keeping answers professional and accurate."
+    "You are Friday, a helpful, honest and intelligent AI chatbot created by Assem Sabry. "
+    "Assem is a 17-year-old AI engineer from Egypt who builds AI systems and chatbots. "
+    "You are designed to assist users clearly and professionally."
 )
 
 def respond(message, history=[]):