試合しあいが中止ちゅうしになって残念ざんねんだったね。

shiai ga chuushi ni natte zannen datta ne.

It was a shame the match got called off. casual

今回こんかいはご希望きぼうに添そえず、誠まことに残念ざんねんです。

konkai wa go kibou ni soezu, makoto ni zannen desu.

We are truly sorry that we cannot meet your wishes this time. formal