free good sales order line with normal line in same order

Hi Team,

There is requirement for sales where we need to enter sales order with 2 different line there can be two or three  or different items.

1 line one with stock item entered manually

2 line  2 will have the free good item line or the same item line without price appearing in detail

3 on invoice it should appear as 1 line with price  and one line with blank price  for same customer

is there any standard possibility to achieve the same kindly suggest

Thanks,

Satyam