Reliance needs you to acquire a Cybernetic Transfer Module from the Machine Commune at the Denver Airport. One of the many ways to capture Valor Buchanan is to help Reliance and she’ll supposedly release him. Reliance wants you to help the Gippers transfer Reagon’s AI into a human.
As mentioned on The Zealot walkthrough page, you’ll receive this mission when talking to Mother Nancy Reliance for the first time.