御利用される — honorific sediment
お持ちしますか — who carries the file?
御乗車できません — odd splice
Train-style 「御乗車できません」 feels keigo-ish: honorific noun + できません. House style varies. Writer note: honorific nouns × potential negatives are a weirdness factory — prefer a clean pattern your organization actually uses (e.g. ご乗車いただけません / plain 乗車できません) over sediment that only looks polite.