Enter Air (E4, Warsaw Chopin) has denied previous reports by German broker Air Service Erfurt that it would operate charter services from Erfurt, Kassel and Rostock on its behalf this summer season. According to the Polish charter carrier the two parties have never entered into any commercial agreement even though the charter flights from Germany to Spain were already put on sale. Air Service Erfurt and tour operator Rewe Touristik have announced that they are still looking for a replacement carrier to operate the flights originally planned to be operated by bankrupt XL Airways Germany (Frankfurt International).