public IActionResult GetAttendedConferencesFirst([FromBody] GetAttendedConferencesFirstModel model)
{
List <ConferenceAudienceModel> conferencesAudience = _conferenceRepository.GetConferenceAudience(model.Email);
List <ConferenceDetailAttendFirstModel> attendedConferencesFirst = _conferenceRepository.GetAttendedConferencesFirst(conferencesAudience, model.StartDate, model.EndDate);
return(Ok(attendedConferencesFirst));
}