We acknowledge / confirm receipt of your order no. …
Thank you for your order of 2 May last, which we have taken down as follows.
We are pleased to inform you that delivery of your order prior to the given deadline/date will be possible.
We hope to be able to send off / dispatch / despatch the goods in the next few days.
As soon as the goods are ready for dispatch/despatch we will notify you by telephone.
Naturally, we will take any particular wishes you may have into account.
We would like to point out that the recent price increase does not apply to this order.
We will await further instructions from you.
We would greatly appreciate continued business relations with your firm.
We thank you for your confidence in our firm.
Future orders would be most welcome.
I will do everything in my power to expedite your order.
Your order will be expedited with due care.