You can set a Zendesk trigger to make Alterra bot reply to select, not all tickets. (By default, it replies to all tickets.) Leave your email here -- a human will tell you how.

Apart from using a Zendesk trigger, there is the second way to make the bot only reply to select tickets. You may define certain intents and program the bot not to reply to such tickets. The bot will pass these tickets to your regular live agent queue.