The invention provides a system, method, and network elements for providing a service, preferably an advice of charge, AoC, service requested by a user equipment at a session set-up or during a session. An application server provides information for the requested service to the user equipment. In an embodiment, authorization information and the information for the requested service may be sent to the user equipment. Depending on an input by the user or other type of confirmation such as expiration of a timer, the user equipment may initiate continuation of the session, for example by generating an authorization response based on the received authorization information, and sending the generated authorization response to the application server for verification.