In any case, when an agent is representing a client as a buyer there is much more than just letting them in the door. Your agent has a fiduciary relationship to you - that means one in which your trust, their loyalty and effort must be on your behalf. The right agent will bring many skills and knowledge to bear on your purchase. THey will know the market thoroughly and be able to advise you on value, pitfalls, inspections, loans, title issues and more. They also need to be a great negotiator.
It is also important that you just have the right chemistry with each other. You should feel comfortable. If for any reason you do not feel that the agent has the background or qualities that work for you, then find the right one. Having the right agent on your side can save you significant time and money. Take the time to interview the agent first.
You do not have to work with anyone that is not right for you.