What is being announced?

May I have your attention, please!(71)Passengers for East Airlines Flight 618 from Rome to Madrid International Airport will be leaving from Gate 8 instead of Gate 17.(72)Everyone is now asked to proceed to the security check in Concourse D. Your flight remains on schedule, so please report to the gate.(73)Boarding will begin in 45 minutes. East Airlines apologizes for any inconvenience. Thank you for your cooperation.