改签

改签	gǎi qiān	to change one's reservation / to transfer to a different flight, airline, bus or train
改	gǎi	to change / to alter / to transform / to correct
签	qiān	to sign one's name / to write brief comments on a document / inscribed bamboo stick (variant of 签) / visa
签	qiān	Japanese variant of 签
签	qiān	inscribed bamboo stick (used in divination, gambling, drawing lots etc) / small wood sliver / label / tag