how to say When I chat online. In Skype for instance, what should I say to ask or ensure my friends are there , online? In chinese we will say ""在吗“”, how about English

A Love Story At that time, they worked in a factory on the suburb and both lived in there as well. They had nothing to do after work, behind their factory there was a railway, after dinner they always walking along that railway. it was in winter, cold badly, face was hurt by the cold wind, while the two young couldn't feel it. Hand in hand, they walked far away along the railway. She wore a pair of fat cotton shoes with small flowers on them, a red thick scarf around on her neck, sometimes wrapped her head and just let the naughty eyes outside when it was too could. Once the train was approaching, she shook off his hand naughtily, running cross the railway. Train passing by fast just as she got the other side .He shouted anxiously on back, shocked to see such a scene, then ran toward her, blaming loudly, but she were not aware of the dangerous, laughed constantly in his arms. He didn't laugh. She looked up at him, pale on his face, obviously he was scared badly. At that moment, she was touched, hadn't realized he was so serious. After winter, her father with others' helps let her work back in the town, at the last night before she left, they remain walking on the railway, as usual, she still laughing constantly, waved her hands in the air like painting something, describing her imaginations about future. While he just smile and listen, speak nothing, occasionally brushed out her long hair be mess by the wind. ...... Many years later, she was almost forgot what he looked like. Memories of the past lost in her mind, until one day she passed that railway by chance again, the factory moved away and there was no train across any more, only that old railway was still leaving there. She stood in the middle of the rusty way, looking down at the two parallel lines, just in a flash, all of the past up in mind like a flood, visible before eyes, fresh and clear, liked the train in those days thundering across. Look up into sky, sunshine spreaded warmly on her face, wind blowing, hair on the forehead was mess again, however, no one to brush it for her anymore. She could hear the crying in her mind, so clear, until then she realize though railway still lie on there silently, train of time had past away, never came back.