Hi Artapon! At the suggestion of my Russian teacher Xana (who also speaks excellent English) I offer this correction:

Today this afternoon, I had an opportunity to converse with a company English teacher at a restaurant near my company. When I saw him, I tried to sit far from him because I'm a little afraid and I worry about my listening and speaking skills. But I told myself in my mind "this is the best time to practice conversation skills. Don't be afraid. I made myself brave (better to say "I gathered up my courage") and decided to sit near him and asked "May I sit here?" "Yes sure," he said. Hahaha! I was very excited! We talked about food. I asked him where he plans to go during the weekend. He told me that on friday night he will go to drink some beer with friends at a bar. (quotes are for exact phrases he will not refer to himself as "he") On Saturday, he called (or will call? tense not clear) apartment maintenance to fix a broken shower head in his room. For Sunday he doesn't have any plans. Hahaha, I understood what he said.

Keep up the good work,

Lysander