A system for providing a service may include a user device executing an application. The application may have an authorization token associated therewith to authenticate a given user to the service. The system may also include a server executing the service, and a virtual assistant to receive a request to access the service via the virtual assistant and communicate the request to the server. The server may determine whether the token has been obtained thereat based upon the identifier. When the token has been received by the server, the server may determine whether the token has expired, and when not expired, the server may process the request. When the token has not been received by the server, the server may obtain the token from the user device, and process the request based upon obtaining the token from the user device.