Notice is hereby given that we cancel our contract dated for the sale of [description of
goods] to [name of firm] , as on [date], you breached the said contract
in the following respect:
Cancellation of said contract is effected in respect to that certain installment delivered
[date], and for any subsequent delivery of goods, contracted for in said contract,
as your breach impairs the contract as a whole.
[We claim damages from you to the tune of (amount $)