public string GetCurrentOOF(string organization, string userprincipalname)
        {
            try
            {
                using (MyPowerShell ps = new MyPowerShell())
                {
                    ps.GetOOFMessage(organization, userprincipalname);
                    PSObject result = ps.Invoke().Single();

                    return(new JavaScriptSerializer().Serialize(new AjaxGetCurrentOOF()
                    {
                        StartTime = result.Members["StartTime"].Value.ToString(),
                        EndTime = result.Members["EndTime"].Value.ToString(),
                        AutoReplyState = result.Members["AutoReplyState"].Value.ToString(),
                        InternalMessage = result.Members["InternalMessage"].Value.ToString(),
                        ExternalMessage = result.Members["ExternalMessage"].Value.ToString(),
                        ExternalAudience = result.Members["ExternalAudience"].Value.ToString()
                    }));
                }
            }
            catch (Exception exc)
            {
                return(new JsonException(exc).ToString());
            }
        }