$1.$This assignment allows you to practice reasoning in your explanation which supports the main idea such as Source, Message, Channel, and Receiver you want to convey to your sender$.$ Subject: Request to buy $10$ sets of dining table to the purchasing cost and control division for using in the condo room. Note: $10$ sets of dining table, Khmer wooden, light red color, size$1$m x $1\mathrm{.}50$m with attached picture.