Final answer:
Responding to a customer, the letter informs them of the temporary unavailability of a product/service and expresses the company's effort to restock. It also expresses appreciation for the customer's understanding and offers future assistance.
Step-by-step explanation:
Dear Valued Customer,
We regret to inform you that the product/service you have inquired about is currently not available. Our team is working diligently to restock and ensure it is available for purchase as soon as possible. We understand the inconvenience this may cause, and we appreciate your understanding and patience in this matter. We recommend checking back with us at a later date or letting us know if you would like to be notified when the product becomes available again.
Thank you for your continued support.
Sincerely,
[Your Name]
[Your Position]
[Your Company]