I know, but I need to keep the delivery within the time frame offered by the sales team to the customer and to get the product to the customer on the best possible scheduled date.
I know, but I need to deliver within the time provided by the sales team to the customer and have them receive the goods on the best delivery date. Possible.
I know, but I need to deliver the goods within the time range provided by the sales team to the customers, and let the customers receive the goods on the best planned date.