ささやか
sasayaka

na-Adjective

1. small; little; tiny; insignificant; humble; modest; meagre; meager

Usually Written in Kana
これはあなたの親切 しんせつ たいするささやかなお れい しるしです。
korewa anatano shinsetsuni taisuru sasayakana orēno shirushidesu.
This is a small acknowledgement of your kindness.