Advertising company MediaZest received a fillip late on Friday as it announced further sales of its 'virtual assistant' product.The creative media agency, which specialises in providing innovative out-of-home marketing solutions, said that three new 'virtual mannequins' have been created for Birmingham airport, in conjunction with queue management specialists Tensator.The mannequins will welcome travellers to the airport and assist with preparations for a speedier passage through security procedures. Several more such projects are in the pipeline and are expected to be completed during the course of 2011, the company said.--jh