あいにく
生憎
ainiku

Noun
Adverb
na-Adjective
no-Adjective

1. unfortunately; sorry, but ...

Usually Written in Kana
あいにくですが本日ほんじつ予約よやくでいっぱいです。
ainikudesuga honjitsuwa yoyakude ippaidesu.
I'm sorry, today is fully booked.
Other forms: