If you cancel your tickets within 24 hours from the booking, nobody can force you to offer cancellation changes for the ticket. you'll get a full refund for the ticket. Lufthansa cancellation policy 24 hours states that if you cancel your tickets on an equivalent day of booking, no cancellation fee is going to be charged on you. you'll also cancel your tickets online; if you would like any help, contact the customer service number for better assistance.