adding hugging face chatbot

app.py

@@ -1,6 +1,6 @@
 from huggingface_hub import InferenceClient
 
-client = InferenceClient("Qwen/Qwen2.5-72B-Instruct")
+client = InferenceClient("HuggingFaceH4/zephyr-7b-beta")
 def respond(message, history):
     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