If you have not created an account
You may speak with Sophia without an account. The conversation then lives only in your browser's memory and is gone when you close the tab; the node keeps no record of it. To limit how often one network address may ask, the node counts requests from each address in memory for an hour. That count is never written down and is lost when the node restarts.
Sophia addresses a guest as Sovereign Seeker and holds no name, no chart and no history for them. Nothing a guest says is sent anywhere outside the node.