4、00What happened to our profit?RevenueManaggyementhistory•PricesoftheUSairlineindustrygotdericesoftheUSairlineindustrygotde-regulatedin1978•Severepricewarsslashedprofitmargins•Airlinesstartedtosegmenttheircustomerbaseandtoapplydifferentpricesfordifferentsegments•RevenueManagementw