A phone or walk-in booking, made by the business

The business books a client itself (a phone call, a walk-in, a message): an existing client (clientId, their pets by petKey and address by addressKey from get_client) or a new one (name, phone and consentNote), the services, a time and the van or walker. It's placed where the van or walker is free (working hours don't bind the business's own bookings), ACCEPTED, cash due on the day or a Payfast pay link for the client. Without confirm: 409 CONFIRM_REQUIRED with the summary. South African businesses only (else NOT_AVAILABLE_IN_COUNTRY). Needs business:manage; the signed-in person must be an owner, manager or staff member of an approved NogPets business (bizId only if they run more than one).