app.py

import gradio as gr
from huggingface_hub import InferenceClient 

client = InferenceClient("microsoft/phi-4")
def respond(message,history):

    messages = [{'role':'system','content':'you are a friendly chatbot!'}]
    if history: 
        messages.extend(history)

    messages.append({'role':'user', 'content': message})
    

    response = client.chat_completion(
       messages,
       max_tokens=100
       )
    return response ['choices'][0]['message']['content'].strip()
                    

chatbot = gr.ChatInterface(respond ,type='messages', title='Friendly Chatbot') #chatbot UI - conversation history and user input  

chatbot.launch()