Lufthansa, Air France-KLM to cut costs after tough first quarter
By Joanna Plucinska, Rachel More and Diana MandiaBERLIN/LONDON/GDANSK (Reuters) - Two of Europe's top airline groups, Lufthansa and Air France-KLM, announced plans to cut costs after reporting wider first-quarter losses on Tuesday as they faced high customer payouts due to flight disruptions and labour disputes.