In order to meet rapidly changing business needs, organizations need business processes that can be flexible and agile to adapt to these changes. This would require dynamic composition of services. Composition of services requires dynamic discovery of services and dynamic selection of service end-point. Service discovery and selection depend on metadata, policy and event associated with these business services. There is a need for dynamic service selection based on runtime environment such as content (semantics), context (event) and contract (policy). In this paper, we propose event-driven dynamic selection of services based on event, policy and semantic. Dynamic service selection will help in dynamic composition of business process and to deliver relevant services to consumer as per the business context and request.