Dear Sir,
We thank you for your order of ____________ (Quantity of Product), but regret to inform you of our inability to supply the same just now, as our stock of ____________ (Product Name) has exhausted.
We have written to the textile mill, which supplies this drill, for an early consignment and we hope to get the same within a fortnight.
ADVERTISEMENTS:
We shall, therefore, take great pleasure in supplying you the required goods in about ____________ (Days). We hope that the slight delay will not be of too much inconvenience to you. We would be grateful if you confirm your order as per the revised schedule.
Thanking you
Yours faithfully,
(Your Name)
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