As the current technology and usage trends in Ambient Assisted Living (AAL) evolves; more and more services were developed for helping dependent people, especially elderly and people with mild dementia to live independently. These services help them to perform Activities of Daily Living (ADL) easily, safely and in a proper manner. The relevant service is delivered to the user seamlessly through a set of devices. As the user moves around, the devices might also move into a new and sometimes unknown domain. This leads to the need for service discovery and provisioning beyond the current capabilities of Open Services Gateway Initiative (OSGi) or other service platforms. A mechanism for seamless semantic service provisioning using semantic web is further discussed in this paper. The challenge here is to produce a platform that supports not only seamless semantic service provisioning, but also to handle user and device mobility through semantic reasoning. The aim of the system is to ensure users are able to use relevant services at a specific location and time with a set of dynamic context