Amstelveen, 2015-6-29 — /Travel PR News/ — KLM won four awards at the Cannes Lions Award Show with our #HappytoHelp Campaign. It’s the world’s biggest annual awards show and festival and viewed as one of the most prestigious advertising prizes. In October 2014 from a special glass pavilion at Schiphol Plaza in Amsterdam Airport the #HappytoHelp customer… Read the full press release