I ran into this exact issue last month when I couldn’t find my Lufthansa booking code after making changes online. At first, I was digging through confirmation emails (look for the 6-digit code in the subject line or under “Booking Reference”), but mine was missing because of a reschedule. What saved me was just calling their support at 877-764-3622. Within minutes, they pulled up my reservation, confirmed my booking class, and even helped me switch to a slightly earlier flight. Honestly, it was way faster than clicking around the site. If your email doesn’t show it clearly, that number is the best way to instantly book, cancel, or modify flights without the headache.