House no.33 Jawahar nagar, Bilaspur, Himachal Pradesh. Dear ........... I am writing a letter to you after a long time.You know that I was sick yesterday and you helped me today to complete my pending work.Thanks a lot for that.Now I realised that you are my true friend.In need I will help you too.And you should take care of your health. That's all I thought I should thank you for your help. Yours best friend, .............