Sure, I'll translate the dialogue for you:
Здравствуй меня зовут мэри грин
Hello, my name is Mary Green
Здравствуй я таня петрова
Hello, I am Tanya Petrova
Сколько тебе лет таня
How old are you, Tanya?
11 а тебе мэри
- And you, Mary?
мне тоже 11
I'm also 11
приятно познакомится
Nice to meet you
мне тоже
Nice to meet you too
пойдем вместе на урок музыки
Shall we go to the music lesson together?
In this dialogue, two girls, Mary Green and Tanya Petrova, are introducing themselves to each other. They exchange information about their ages, express their pleasure in meeting one another, and then suggest going to the music lesson together. This type of conversation is typical for young students getting to know each other in a school setting.