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README.md

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+---
+title: Cinco Return Chatbot
+emoji: 🤖
+colorFrom: blue
+colorTo: green
+sdk: gradio
+sdk_version: "3.50.2"
+app_file: app.py
+pinned: false
+---

app.py

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+import gradio as gr
+from transformers import AutoModelForSeq2SeqLM, AutoTokenizer, pipeline
+
+# Load a lightweight, CPU-friendly model
+model_id = "google/flan-t5-base"
+tokenizer = AutoTokenizer.from_pretrained(model_id)
+model = AutoModelForSeq2SeqLM.from_pretrained(model_id)
+
+# Pipeline setup
+chatbot = pipeline("text2text-generation", model=model, tokenizer=tokenizer)
+
+# Function to format prompt for chat-like interaction
+#def format_prompt(history, user_input):
+ #   base_prompt = (
+  #      "You are Cinco, a helpful and friendly customer support assistant. "
+   #     "Answer customer questions politely and clearly about product returns, refunds, and exchanges.\n\n"
+    #)
+    #for user, bot in history:
+    #    base_prompt += f"Customer: {user}\nCinco Assistant: {bot}\n"
+    #base_prompt += f"Customer: {user_input}\nCinco Assistant:"
+    #return base_prompt
+
+def format_prompt(history, user_input):
+    policy_context = (
+    "Cinco Return Policy Guidelines:\n"
+    "- 🕒 **Returns Window**: Items may be returned **within 30 days** from the date of purchase.\n"
+    "- 🧾 **Proof of Purchase**: A **valid receipt or order confirmation** is required for all returns and refunds.\n"
+    "- 📦 **Item Condition**: Returned products must be in **original condition**, meaning **unused, unwashed, with tags still attached**.\n"
+    "- 💳 **Refunds**: Refunds will be processed to the **original method of payment** (e.g., credit card, debit card, PayPal).\n"
+    "- 🔁 **Exchanges**: Each item is eligible for **a one-time exchange only**, subject to availability.\n"
+    "- 🚫 **Non-Returnable Items**: Items that have been **used, washed, or worn**, or returned **without a receipt**, **cannot be accepted** for return or exchange.\n"
+    "- 🎁 **Gifts**: Gift returns require a **gift receipt** and will be refunded via **Cinco gift card**.\n"
+    "- 🌐 **Online Orders**: For items bought online, customers can return via **mail** or in **any Cinco retail store** with a printed invoice.\n"
+    "- ⌛ **Processing Time**: Please allow **5–7 business days** after the item is received for the refund to reflect.\n"
+    "- 🛍️ **Final Sale Items**: Some products (e.g., clearance or promotional items) are marked as **final sale** and are **not eligible** for return or exchange.\n\n"
+)
+
+
+    intro = "You are Cinco Assistant, a helpful and polite customer support agent for the clothing brand Cinco.\n"
+    
+    # Include history if any
+    formatted_history = ""
+    if history:
+        for i, (user_q, bot_a) in enumerate(history):
+            formatted_history += f"Customer: {user_q}\nCinco Assistant: {bot_a}\n"
+
+    current_question = f"Customer: {user_input}\nCinco Assistant:"
+
+    # Combine everything
+    prompt = (
+        intro
+        + policy_context
+        + "Use the above return policy to answer the customer's question below.\n\n"
+        + formatted_history
+        + current_question
+    )
+
+    return prompt
+
+
+# Chatbot logic
+def chat_fn(user_input, history):
+    history = history or []
+    prompt = format_prompt(history, user_input)
+    response = chatbot(prompt, max_length=256, do_sample=False, clean_up_tokenization_spaces=True)[0]["generated_text"]
+
+    if "Cinco Assistant:" in response:
+        assistant_reply = response.split("Cinco Assistant:")[-1].strip()
+    else:
+        assistant_reply = response.strip()
+
+    history.append((user_input, assistant_reply))
+    return "", history, history  # return history twice: one for state, one for Chatbot UI
+
+# Enhanced UI with better layout and visuals
+with gr.Blocks(title="Cinco Returns Chatbot") as demo:
+    gr.Markdown("""
+    # 🧾 Cinco Returns Chatbot
+    Welcome to the Cinco Returns Assistant. Ask your questions about returns, refunds, and exchanges.
+
+    ### 💬 Example Questions:
+    - *Can I return a sweater I no longer want?*
+    - *What if I don’t have a receipt?*
+    - *Can I exchange a used item?*
+    """)
+
+    with gr.Box():
+        chatbot_ui = gr.Chatbot(label="Cinco Assistant", show_label=False, height=400)
+
+        with gr.Row():
+            user_input = gr.Textbox(
+                placeholder="Type your question here (e.g., I want to return a sweater)...",
+                scale=9,
+                show_label=False,
+                lines=2
+            )
+            submit_btn = gr.Button("Send", variant="primary", scale=1)
+
+        state = gr.State([])
+
+       submit_btn.click(
+    fn=chat_fn,
+    inputs=[user_input, state],
+    outputs=[user_input, state, chatbot_ui]  # return history to both state and Chatbot
+)
+user_input.submit(
+    fn=chat_fn,
+    inputs=[user_input, state],
+    outputs=[user_input, state, chatbot_ui]
+)
+
+
+    gr.Markdown("""
+    ---
+    🤖 Powered by [FLAN-T5](https://huggingface.co/google/flan-t5-base) on Hugging Face Spaces.
+    """)
+
+if __name__ == "__main__":
+    demo.launch()

gitattributes

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requirements.txt

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+transformers==4.40.0
+gradio==4.44.1
+torch
+faiss-cpu
+sentence-transformers
+accelerate>=0.26.0