Hunting Store Website Chatbot

I want to add an always-on chatbot to our hunting-gear e-commerce site so visitors can get instant help without waiting for live staff. The bot’s single home will be the website; no mobile app or social-media deployment is required right now, so you can focus on a tight, reliable web integration.

Core functions I need covered:
• Answer the usual FAQs about products, sizing, shipping times, and warranty.
• Guide customers through our returns and exchange policy, collecting order numbers and generating the correct next steps.
• Provide up-to-date store information—hours, contact channels, and any seasonal promotions—by pulling from a lightweight CMS or Google Sheet that I can edit myself.

The conversation flow should sound natural, use branded language, and hand off to a live agent (Zendesk Chat) whenever the question gets too complex. A training dashboard where I can upload new Q&A pairs myself is essential so I’m not dependent on code changes for every tweak.

I’m open to the framework you prefer—Dialogflow CX, Microsoft Bot Framework, Rasa, or a custom Python/Node solution—as long as it embeds cleanly on our Shopify theme and loads quickly. Please outline:
1. Your proposed tech stack and why it fits.
2. How you’ll handle intent training and testing.
3. The hand-off mechanism to Zendesk.
4. The timeline to reach a working beta and final deployment.

Deliverables will be the complete chatbot source (or cloud project), integration script/snippet, basic admin guide, and one round of post-launch tuning.