Japanese people need to be room attendants in hotels.

I can only use a few words when staying in a hotel, and it would be best if I could help you:

I told the front desk when I checked in.

あの、すみません。 チェックィンぉぃします.

I said it when I checked out.

あの、すみません。 チェックァトぉぃします.

When you check out, you should say "assignment" or "accounting", as if you heard someone say so.