Lufthansa doesn't enable cancellations for flights. If you do not use your price ticket for the indicated flight, it can not be reimbursed, nor will it's used for the requested service on another flight or reservation. Just for flights to and from the US, you'll be able to cancel or amend your reservation within the twenty four hours following your purchase with no fees or penalties see you later because the flight was engaged seven or additional days before the departure date. By lufthansa cancellation policy you'll be able to still sell your flight to some other person and find your refund that way! additional on this below.