Powiedzmy, że ten kolega to Mark xD
Your sister called when you were at work today. I think it was 3 pm? Dosen't matter.
The thing is that she really needs to talk to you, about your mothers birthday party.
She asked for me to tell you, that you're supposed to call her the moment you get back home.
I'm leaving for the weekend with some of my friends, so see I'll you on Monday.
Have a good weekend,