West Hollywood-basd Ticketmaster, the ticketing business of Barry Diller's IAC, said Thursday that it has acquired SLO Limited Inc, a provider of VIP ticketing services to major touring artists and special events. Financial terms of the acquisition were not disclosed. SLO provides concierge delivery of seats to event clients; the company also handles travel packaging for fans and related events. SLO Limited was headed by Shelley Lazar, who will join Ticketmaster as part of the acquisition.