How is correct one at station or at the station?

Question

Answer

Alla staZione

Answer

What is a station?
Train station?
A personal station, where you work?

Answer

Your question is a bit hard to understand, so here are some full sentences using the words you've given me:

I am at the station. Are you at the station? Where is the station? What is the name of the station? There is only one person at the station. I am the only one at the station.