Abstract: In an embodiment, a reservation server runs a reservation service that allows users of diner clients to reserve reservations with one or more restaurants. In addition, the reservation server runs a self-serve promotion service that restaurant clients to request automatic or semi-automatic generation of content displays for promotions. In some cases, the reservation server uses statistics to predict future periods of time when covers for a restaurant will be below average. The reservation server then automatically generates a promotion that is likely to increase covers during the previously predicted future periods of time. In response to the promotion being selected by a user, the reservation server generates a content display that is subsequently published to the reservation service. As a result, the content display is presented to users of the diner clients when searching for criteria satisfied by the restaurant.