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app.py

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+import gradio as gr
+import random
+import time
+
+# Dummy knowledge base
+FAQ = {
+    "hello": ["Hi there!", "Hello! How can I help you?"],
+    "bye": ["Goodbye 👋", "See you soon!"],
+    "help": ["Ask me anything about our products.", "Try typing 'pricing' or 'features'."],
+    "pricing": ["Our plans start at $9/month.", "Check the website for the latest pricing."],
+    "features": ["We support file uploads, integrations, and real-time sync.", "Explore the docs for the full list."],
+}
+
+def respond(message: str, history: list[tuple[str, str]]):
+    """Return a response based on simple keyword matching."""
+    message = message.strip().lower()
+    response = None
+
+    # Simple keyword lookup
+    for key in FAQ:
+        if key in message:
+            response = random.choice(FAQ[key])
+            break
+
+    # Fallback
+    response = response or "I'm not sure how to answer that. Could you rephrase?"
+
+    # Simulate typing delay
+    time.sleep(random.uniform(0.3, 1.2))
+    return response
+
+# Build and launch the interface
+demo = gr.ChatInterface(
+    fn=respond,
+    title="Simple FAQ Bot",
+    description="Ask me about pricing, features, or just say hello!",
+    theme="soft",
+    examples=["hello", "pricing", "features"],
+)
+
+if __name__ == "__main__":
+    demo.launch()