Receipt
A receipt is the reply that states what was recorded, item by item, so that the person narrates from what happened and not from what they believe they said. Every IZeat write returns a receipt, signed "IZeat ·": the items with their quantities, figures and sources, the meal total and the day so far, and the assistant relays it rather than paraphrasing it.
A tool that answers only "ok" is a broken tool: a day summary that comes back empty while the writes succeeded is indistinguishable, from inside a conversation, from having logged nothing. So the receipt carries the facts, the signature tells the customer which sentences are IZeat's record and which are the assistant's own advice, and if the follow-up read fails after a confirmed write, the receipt still confirms the write and asks for the day to be read again.
The receipt is also how a customer tells the two voices apart. What follows the signature is IZeat's record, computed from rows with named sources; what the assistant adds after it, a suggestion for dinner, a remark on the week, is the assistant's own, and IZeat never claims it. In a long conversation that distinction is what keeps trust in the numbers intact.
Put it into practice: How a reply is signed.
Updated