Https://cpm.tamu.edu/wp-content/uploads/formidable/2/Lufthansa-Airlines%C2%AE%EF%B8%8F-Customer%C2%AE%EF%B8%8F-USA-contact-Numbers-A-Step-By-Step-Guide.pdf https://cpm.tamu.edu/wp-content/uploads/formidable/2/Lufthansa-Airlines%C2%AE%EF%B8%8F-Customer%C2%AE%EF%B8%8F-USA-contact-Numbers-A-Step-By-Step-Guide.pdf