Write a confirmation letter

Dear Ngan,
I’m going to have a birthday party at 8:00 p.m on Saturday. Can you buy me two bunches of bananas, three kilos of oranges, ten mangoes, and bring them to my house an hour before the party? Is the time convenient for you?
If you accept, please let me know as soon as possible. I’ll wait for you at 7:00 p.m on that day.
Love,
Na.

Dear Na,
I’m glad to hear that you have emailed me. Certainly, I’ll help you to buy two bunches of bananas, three kilos of oranges, ten mangoes and bring them to your house.
Love,
Ngan