Tickets for the talk on Saturday, Sept. 14, by Hanan Ashrawi at the University of Colorado at Boulder are sold out, according to representatives of the Cultural Events Board, a program of the student government. The talk is scheduled for 7 p.m. at the Glenn Miller Ballroom in the University Memorial Center at Broadway and Euclid Avenue. Doors will open at 6 p.m. for the talk. Because of additional security for the event, people are encouraged not to bring purses and backpacks in order to expedite screening prior to the talk.