Clients expenses paid by us but bill came on their name

Hi,

Hope you guys doing well,

So my question is Suppose there are 3 parties A, B & C. “A” who has client named B and a service provider named C.

A is making a website for his client  B during that  “A” took some services from C for 8,000 and paid for the same. But C issued an invoice on the name of B.

And A already issued an advance invoice to B. So how can A book those expenses in his books. What will be journal entries for the same?

Thnaks