The Ufo union is calling on some 19,000 flight attendants at German carrier Lufthansa and its subsidiary Lufthansa Cityline to go on strike on Tuesday and Wednesday, the union announced. The strike will affect all departures from Frankfurt from 4 am (0300 GMT) to 11 pm on Tuesday and all departures from Munich on Wednesday, the union said on Saturday evening. More than 96% of flight attendants of the core company and at Lufthansa Cityline had previously voted for industrial action in separate strike ballots, Ufo said. The union stressed that Lufthansa had announced a record result of almost €1…