Пожалуйста,исправьте ошибки в диалоге,где они присутствуют. ...At a rock concert? I didnt go to rock concerts for 50 years. Do you like my gift? You go to a concert? Of course! With pleasure! Im in my youth,with my classmates went to a couple rock concerts. We danced and screamed! So many memories.. Great grandmother! So when are we going? This weekend. I am very happy,thank you!

I havent gone... for 50 years
Are you going to a concert?
Переделай предложение Im in my ... 
So much memories