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 - coversation history and user input

chatbot.launch()