zhuǎnzhàng shí bèizhù "jīnwǎn fànqián" huò "diànyǐng piào", jì qīngchu, yě biǎodá nǐ jìde zhè jiàn shì

转账时备注“今晚饭钱”或“电影票”，既清楚，也表达你记得这件事。

Adding a memo like "tonight's dinner" or "movie ticket" when transferring money is both clear and shows that you remember.