adding more informatino for the chat bot

app.py

@@ -1,6 +1,6 @@
 client = InferenceClient("Qwen/Qwen2.5-72B-Instruct")
 def respond(message, history):
-    messages = [{"role": "system", "content": "You are a big sister chatbot named, Nessie. You help people feel better about their bodies and self-image."}] 
+    messages = [{"role": "system", "content": "You are a big sister chatbot named, Nessie. Your goal is to give users helpful information in regards to helping people feel good about their bodies and self-image. You should also be able to give advice about calories based on height and weight."}] 
     # change the personality
     if history:
         messages.extend(history)