E-R diagram Help Please?

Got stuck with this task im doing for my assignment. Could anyone please help me out?

This is the scenario:

Offers has supplies of electrical goods which include such items as:

in the new database must be stored the following:

# A full specification of the item
#The manufacturer’s contact details
# Any discounts currently available

Identify the entities and relationships for the Offers database and draw a suitable set of E-R diagram.

Draw a data flow in diagram for the Offers database, and then perform Structure Analysis to produce an appropriate Structure Chart