@article{learningcheapandnovelflightitineraries,
  title = {Learning Cheap and Novel Flight Itineraries},
  author = {Dmytro Karamshuk and David Matthews},
  year = {2018},
  eprint = {1812.01735},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1812.01735v1},
}