Write a confirmation letter

Dear An
At 8:00 on this Satuday I will celebrate my birthday. That day I was quite busy for the party. So I need your help. In that day I want to buy two bunches of bananas, three kilos of orange, ten mango ad brig them to my house an hour before the party. If possible, I would like to thank you. I will wait for you that day.
Love
Ngan

Dear Ngan
I'm very happy to help you on your birthday. Cerlamly I'll help you to buy what you need to prepare for birthday. I will buy them before 1 hour. We'll meet again on 7:00 am on Saturday.
Love
An