Required quote line items to be converted as sales order

Hi Guru’s

We have a business scenario like below

1)      User create a quotation (eg: 100 lines)

2)      Business sends the same quote to the customer for item selection

3)      Customer may select 50 items out of 100 items

Here, we wanted to convert only customer selected line items into sales order.

As per my knowledge, we cannot convert the required quote line items into sales order. As we are able to convert all quote line Items into sales order. But, my requirement is to convert the only customer selected line items into sales order.

Could you please suggest us do we have any standard functionality or workaround to achieve the above requirement?