customer (polite)

I explain it.

私は説明します

I explain the product to the customer.

私はお客様に商品を説明します

I explain the product to the customer on the shop floor.

私は売り場でお客様に商品を説明します

I explain the product to the customer on the shop floor in the afternoon.

私は午後に売り場でお客様に商品を説明します

I explain the product to the customer on the shop floor with my senior in the afternoon.

私は先輩と午後に売り場でお客様に商品を説明します