Replying to a refusal of an invitation


By now, it's pretty simple to find different ways of refusing invitations in
Japanese. However, what I can't really seem to find is a **reply to a
refusal**. Something like _I'm sorry you can't make it_ , _I hope you can join
me next time_ or even a simple _That sucks, man._

So, what would be an appropriate reply to somebody's ちょっと用事があるんですけど (or
whatever)? The only thing I could come up with my limited Japanese skills is
something like 残念ですね but that seems a bit bland.

I'd be interested in both a casual version and a more formal one.




**Informal** :

・あっちゃー。

・あっちゃー、そりゃ残念{ざんねん}。

・あ、そうなんだぁ。じゃあしょうがないね。

・えーマジ（で）？じゃあまた今度{こんど}ね！

I could go on all night..

**Formal** :

・そうですか、それは残念です。ではまたの機会{きかい}に。

・左様｛さよう｝でしたか。では仕方｛しかた｝がありませんね。またお誘｛さそ｝いします！

・そうでしたかぁ。それは残念ですねぇ。では、また次回{じかい}ということで。

Somebody stop me by force!

