We'd like you to accept this gift in payment for your kindness.
謹以薄禮答謝厚愛，敬請笑納。
Such kindness restores your faith in human nature.
這樣的善心使人又一次感到人性善良。
His kindness did not go unnoticed by his staff.
他的厚道員工了然于心。
The flowers were a small acknowledgement of your kindness.
這些花聊表謝意，感謝你的好心幫助。