There are many ways to find out the experience level and production volume an agent has with a little bit of internet searching. You can go to the website of the firm the agent is working with. Review the profile page of that agent and see how many listings they have for sale, what the agents profile shows, review how many sales the agent has represented for the listing side of the transaction.
This should review how many years they have been in the business and look for company awards. The experienced agents should have a history of production and service awards. You can also google the agents name and review what websites they link with.
Interview the agent and ask them questions and have them show you what they have accomplished in the buisiness.