There are some mistakes in the letter. Correct them out use the appropriate grammar. Write the correct text. Dear Sir, The backpack return. We get a letter from

There are some mistakes in the letter. Correct them out use the appropriate grammar. Write the correct text.

Dear Sir,

The backpack return.

We get a letter from you on December 15, 2012 reporting that you lose your backoack on your way from Jakarta to Padang kn December 14, 2012. You described that the backpack are gray with black strap. There's a name tag: Willy.
Here I wanted to inform you that we have find your backpack today. We hope you can pick it up in our office: PO Jelajah Pulau, Jalan Raja Ampat No. 200, Padang, phine number 123456789. Sorry for the inconvenience.

Sincerely,
Sri Anggraeni
Operational Supervisor