The completion of the Irving Convention Center at Las Colinas is soon approaching. Residents are encouraged to e-mail questions about the convention center to ictn@cityofirving.org by 5 p.m. Oct. 29. Irving Convention and Visitors Bureau Executive Director Maura Gast, and others, will respond to resident inquiries on “Open Line,” which will air at 7 p.m. Nov. 3 on ICTN 1 (Time Warner 16, Verizon 30, www.ictn.tv).