Event Registration HALA Registration Description: HALA: Session IV will be held at Central Office on Saturday, April 14, 2018. Registration will close on Wednesday, April 4, 2018 at 5:00 pm. All hotel reservations for the last session will be located at Hilton in Houston Galleria Area. We are sorry but registration for this event is now closed. Please contact us if you would like to know if spaces are still available.