@gaurav I bought a ticket through United Airlines to travel to Nigeria 🇳🇬 from the United States 🇺🇸. I had a layover in Germany 🇩🇪 so as part of the package, I was to fly with Lufthansa into Lagos, Nigeria 🇳🇬. No problem.
Lufthansa messed up the spelling of my name on the return ticket portion (which obviously did not match up with my passport), & for security reasons deleted the return flight.
United force Lufthansa to buy me a return flight ticket, but I had to fly through Turkey 🇹🇷.