Написать эмеил , не замудренный . По примеру

Dear Ben,
I am in Moscow and i think it is my best holiday. We were walking all day, so I know the coldest winter is Russian winter. The weather is very cold and snowy. Now my new russian friend Natasha and I sitting in the cafe and drink our tea with lemon. It ia so nice to sit in a warm cafe and watch through a window at snow. I and Natasha all day looking for the best postcard for you. Join us. Russia is beautiful and interesting country.
Anyway, bye for now. We will wait for you.