This question already has an answer here:
I'm flying for the first with a passport. Until this day I always gave my first and last (João Martins - my full name is João Francisco Carvalho Andrade Martins) name for European flights and everything went great. While booking a flight to the US, I did the same, but I don't know if I should've done that.
My passport shows:
GIVEN NAMES: Joao Francisco
SURNAME: Carvalho Andrade Martins
But I just bought the tickets only with "Joao Martins". Am I in trouble?