Is tonight's shipment still in the post office dispatch room, or has it gone out to the van?

How to say “Is tonight's shipment still in the post office dispatch room, or has it gone out to the van?” in Japanese

In Japanese

今夜出(こんやだ)す荷物(にもつ)、まだ郵便局(ゆうびんきょく)の発送室(はっそうしつ)にある？それとももう配送車(はいそうしゃ)に積(つ)んだ？

Kon'ya dasu nimotsu, mada yūbinkyoku no hassōshitsu ni aru? Soretomo mō haisōsha ni tsunda?

Is tonight's shipment still in the post office dispatch room, or has it gone out to the van? in other languages