From the responses I get from my clients, see below;
They schedule a pre-meeting to discuss the buyers goals and objectives and to get an understanding of how the process works, along with what how the agent works. From that meeting the Buyer and Agent will determine if they want to work together.
An automatic search based on the clients wants and needs is set up.
The agent will preview homes and discuss with the Buyer why some of the homes don't fit.
The agent will explain the pro's and concerns on each property.
Once a home is selected the agent will have a conversation with the listing agent so that the Buyer will know how to be proceed with the offer.
The agent will negotiate everything, discuss the inspections and disclosures and explain what it means to the Buyer. The agent also has resources for the Buyer, financing, etc. so that the buyer can focus on the home.
Most importantly, the agent will listen to the Buyer and be honest. They don't push them into buying something, If it is going to be costly they explain that to the Buyer. They take the time the Buyer needs.
I'll leave room here for the other agents, as I could go on for a much longer time.