Prices a change to a confirmed Airbnb reservation before it is sent: what the guest would pay, what Airbnb takes and what the host gets, next to the booking as it is. Nothing is sent to the guest, so call it as often as the host edits the change. Takes the same body as /api/requestAlteration/{reservationID}; send only what changes.
Airbnb prices the new dates and guests itself. With a totalPrice, proposed is priced at that total and airbnbPriced holds Airbnb's own price for the same stay, so the two can be shown side by side. unavailableDates lists nights the new dates share with another booking on the listing.
Airbnb only, like /api/requestAlteration/{reservationID}. The reservation must have source "Airbnb" and status "accepted", and its stay must not have ended. Requires the reservations:read scope.