I have to check would I have been registered for a conference in Moskva, my colleuge already did that but we not sure did they get the registration form for both of us. According to their letter it seems to us that they couned only on her.That will be my first contact with organisator
Write them and ask,
I need to confirm that I have been registered for the conference in Moskva. My colleague has already registered, but we are not sure if you got the registration form for both of us. According to letter we received from you, it seems that you counted only her.