You could probably use the “Find Records” automation action to search for what you need, but after that, you would need conditional logic to figure out what to do if your searches result in more than one matching result. For example, which expert would you email if there was more than one result?
Conditional logic is not currently possible with Airtable’s native automation support, and Airtable’s automations only supports emailing ALL of your found matches (not just ONE of your matches).
So, if Airtable’s automations aren’t robust enough to handle your needs, you would have to accomplish this in another way. You could:
Use an external automation platform such as Integromat, which is a no-code/low-code platform that has conditional logic built into it. In Integromat, you use routers and filters to handle conditional logic.
(Note that I am a professional Airtable consultant and a Registered Integromat Partner, and the Integromat link contains my personal referral code.)