CREATE TABLE table_43374 ("Ship" TEXT, "Built" FLOAT, "Builder" TEXT, "Entered Service for AIDA" TEXT, "Gross Tonnage" TEXT, "Flag" TEXT)

Which Flag did the Ship Aidavita have?
SELECT "Flag" FROM table_43374 WHERE "Ship" = 'aidavita'
SELECT "Flag" FROM "table_43374" WHERE "Ship" = 'aidavita'