Looking forward to your reply. If you need more help, please let me know. We will be very grateful for your reply.
I will be very happy to receive your letter as soon as possible. Your most sincere greetings and best wishes. Thank you for your friendly cooperation.
Thank you for your attention to this matter. Thank you for your understanding. Thank you for your concern.
Thank you for all you have done.
Dear lily, I haven't seen you for a long time. I miss you very much, so I wrote to you. I was very busy last month, because I had a lot of homework to do and the final exam was coming, so I had to study hard.
In addition, I have to learn piano for two days. It takes me some time, but I feel very happy that this is my recent life. What about you and me? I am looking forward to your letter and telling me Your life.
In conclusion I firmly believe that...
Looking forward to your reply