Write a letter acknowledging of order and its execution.

Dear Sirs,

This is to express our gratitude for your order of 6^th instant. We would like to inform you that they have been dispatched. The invoice for the goods amounting Rs.56640 only including packing and incidental charges is enclosed.

We sincerely hope that you will be fully satisfied with our prompt execution and favor us with subsequent orders.

Thanking you

Yours faithfully