I was not able to rebook outside of LH group for Bogota to Frankfurt on Thursday night, even though there are no other LH group airlines flying to Bogota. They said the flight has to be cancelled. Flying via the United States on Avianca and United is bound to sell out by the time my Bogota flight is actually cancelled. I'm furious that LH isn't rebooking yet on non LH group airlines. My attempt was with a supervisor by calling the US customer service line.