Email notification to the referrer

Hello experts,

I am looking for an Alert composer or Content Library to send out a notification to the employee when they refer the candidate.

For instance, Jack is an employee referring David for one of the positions. we have identified the invitation email is going to David, but there is no email triggered to Joe.

Is there a Content Library item or Alert that can be leveraged to send out a thank you email notification to Jack? though they can see the Referred person under the "Referral' Section.