Flow of order in trading

Here there are 3 persons involved - Investor, Salesperson and the market-maker/trader.

1. Investor places order to salesperson at the bank with details of the order.
2. The order details are recorded by the salesperson.
3. These details are forwarded (automatically if done electronically) to the trader or market-maker.
4. The trader/market-maker places these details in the trade book of that bond market.
Now they can be 2 things that trading is successful or it may fail.
Suppose it is successful, then go to step 5.
5. The trader informs the salesperson of the terms that how the deal is executed. Now execution of order can be partial or full depending on whether it is allowed or not.
6. The salesperson records execution detail. This is similar to step 2.
7. The order execution information is provided to investor.

Similarily if the broker is involved, he may send the details to the bank or the exchange directly. It is similar to the above steps that are shown.