Would like to see if there could be an improvement with the below scenario:

I am creating a sales quote and have about 5 lines that I am quoting to the customer. I sent my customer the sales quotes and they issued me a PO with only 2 out of the 5 parts. Would like to see a select function on the 2 lines that I can put on the sales order, instead of converting the whole order on the sales order and then deleting the lines