The Merrimack Valley Chamber of Commerce is scheduled to hold its VIP Business Expo luncheon from noon to 1:15 p.m. Wednesday, April 3, at the Phoenician Restaurant on Route 110 . Tickets are $28 per person. The event will feature House Speaker Robert A. DeLeo of Winthrop and his budget chairman, state Representative Brian S. Dempsey of Haverhill. Other confirmed speakers include: state Representatives Michael Costello of Newburyport, chairman of the House Committee on Financial Services; Linda Dean Campbell of Methuen, vice chairwoman of the House Committee on Election Law; and Marcos A. Devers of Lawrence, vice chairman of the Joint Committee on Children, Families, and Persons with Disabilities. To buy tickets, contact the chamber at 978-686-0900. For more information, visit the chamber’s website at www.merrimackvalleychamber.com.