Dear Sir,
On 1 March I ordered 150 badminton rackets to be delivered at the end of this month.
Persistent bad weather has seriously affected sales so I find that my present stock will probably satisfy demand in the present season. I am therefore writing to ask you to cancel part of my order and to deliver only 50 of these rackets instead of the 150 ordered.
I am sorry to make this request so late but hope that you will be able to agree to it in view of our long-standing business association. Should sales improve I will get in touch with you again and take a further delivery.
Yours faithfully,