public object GetUserArrivalForCurrentWeek(int id, DateTime startDate, DateTime endDate)
 {
     var audienceManager = new DataAccess.AudienceManager();
     var audiences = audienceManager.GetArrivalAudiences(id, startDate, endDate);
     if (audiences == null) { return null; }
     return audiences.Select(model => new
     {
         ID = model.AudienceID,
         Name = model.Name,
         ConventionName = model.Convention.Name,
         ArrivalDate = model.Convention.StartDate.ToString("MM dd,yyyy"),
         IsAttended = model.IsAttended
     });
 }