Create app.py

app.py

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+import gradio as gr
+from transformers import pipeline
+
+# Load lightweight dialogue model
+chatbot = pipeline(
+    "text-generation",
+    model="microsoft/DialoGPT-small"
+)
+
+# Function
+def reply(message):
+    if not message.strip():
+        return "Please enter a message."
+
+    result = chatbot(
+        message,
+        max_new_tokens=60,
+        do_sample=True,
+        temperature=0.7,
+        pad_token_id=50256
+    )
+
+    return result[0]["generated_text"]
+
+# Gradio UI
+demo = gr.Interface(
+    fn=reply,
+    inputs=gr.Textbox(
+        lines=2,
+        label="Your Message",
+        placeholder="Say hello..."
+    ),
+    outputs=gr.Textbox(
+        lines=4,
+        label="Bot Reply"
+    ),
+    title="💬 Dialogue System",
+    description="Conversational AI using DialoGPT model.",
+    theme=gr.themes.Soft()
+)
+
+demo.launch(server_name="0.0.0.0", server_port=7860)