public ActionResult <PatientViewModel> AssignAppointment(int appointmentId, String IduserStaff)
        {
            var response = _Service.AssignAppointment(appointmentId, IduserStaff);

            if (response.Error == false)
            {
                return(Ok(response.Object));
            }
            else
            {
                return(BadRequest(response.Message));
            }
        }