public HttpResponseMessage isTableReserved(int clientId)
        {
            TableProvider tableProvider = new TableProvider();
            ErrorModel    errorModel    = null;

            var status = tableProvider.isTableReserved(clientId, out errorModel);
            APIResponseModel responseModel = new APIResponseModel();

            responseModel.Response = status;
            responseModel.Error    = errorModel;
            return(Request.CreateResponse(HttpStatusCode.OK, responseModel));
        }