Can I say がございませんですが？ Does it make sense?


> アレルギーがございませんですが、何をいただけばいいでございますか。

Does this make sense? I'm trying to write in humble form and trying to connect
the two sentences by using が as "but". However, I'm not sure how to use it
with でございます。




As the comment says, ございませんですが is off the mark.

Incidentally, even if you fix the awkward/comical grammar, it's still weird.
In other words, アレルギー **が** ございませんが、何をいただけばいいでしょうか means that you are
demanding the listener to offer something substitutable when you find that
s/he doesn't have the object called アレルギー despite s/he is supposed to offer it
to you.

