An assistant is only as good as what it knows. Writing everything down before you start is impossible: customers always find questions you didn't think of. So the assistant learns from the work your team already does.
1. It notices what it couldn't answer
When a customer asks something that isn't in the knowledge base, the assistant doesn't guess. It sends a holding reply, alerts your team, and keeps the question as a suggestion. Questions that come up again are counted, so the most asked ones are at the top.
2. Your team answers, as usual
Someone from your team replies in the inbox, just like they would on their phone. The assistant pauses in that chat while your team takes over, so nobody talks over each other.
3. The reply becomes a suggestion
Your team's reply is already filled in as the answer to the suggestion. Nobody has to copy anything or write documentation after work.
4. One click to approve
Approve the suggestion and it joins the knowledge base. The next customer who asks gets the answer from the assistant, in their language, at any time of day. Nothing goes into the knowledge base without someone approving it, and you can switch any answer off again.
The more your team answers, the less your team has to answer.
What this means over time
In the first weeks your team sees more hand-overs, because the knowledge base is still small. Each approved answer takes one kind of question off their plate. The questions that keep reaching your team are the ones that really need a person.
A tip: look at the suggestions once a week. Approve the good answers, shorten the long ones, and switch off what no longer applies, like last season's prices.