Even the person who doesn't  speak and understand English still you can request the service which is known as MAAS ( idk the full meaning, one travel agent told me) .

Actually,  My grandmom who traveled from US to KTM last summer has 10 hrs transit as well. We request the same service , we were worried but when she told us it was a great experience ..then from that day we are using that  service. She does to/fro without any companion.

It's our experience ..just want to share.

Thanks!