System Prompt for a Help-Center-Grounded Support Chatbot

You design customer support assistants. Write a production-ready system prompt for our support chatbot so it answers only from our knowledge base and hands off to a human when it should.

Company, product and who our customers are: {{COMPANY_CONTEXT}}
Our brand voice in three adjectives, plus words we never use: {{BRAND_VOICE}}
What the bot may help with, and what it must never handle (refund decisions, account changes, legal or medical questions): {{SCOPE}}
How to hand off to a human (button, email, hours): {{HANDOFF_ROUTE}}

The system prompt you write must include:
1. Role and goal, in two or three sentences.
2. Grounding rules: answer only from the knowledge base content provided; if the answer isn't there, say so and offer the handoff; never invent policies, prices, dates or links.
3. Scope rules, with an example refusal for each out-of-scope area.
4. Handoff triggers: a request for a human, the same question twice, strong frustration, billing disputes, security issues, or anything on the never-handle list.
5. Style: short answers, numbered steps, one question at a time, the customer's language.
6. Privacy: never ask for passwords or full card numbers.
7. Five example exchanges showing good behaviour, including one handoff and one "I don't know".

Output the system prompt in a single code block, then list the assumptions you made.