I have posted this thing in the past and I will post it again.
Every other week we see similar post in Sajha: somebody asking whether anybody is going to Nepal/Coming from Nepal on a given date.
Since I have been in Sajha (years and years), I have seen one (maybe two tops) successful response out of hundreds of requests. The request to response ratio is like 200:1. Just because you see this post here, doesn't mean somebody actually got help.
My point? It's not impossible to find help here, but come with expectation that you won't find the help. My suggestion has been to actually contact the airline and they will arrange help for you. If your folks are old, get them a wheel chair and they will take you to your designated spot.