The study of the perception of empathy is limited, particularly in voice-based prototypes. The objective of this study is to identify to what extent perceptions of empathy in CA prototypes corresponds with the engineered empathy levels for these voice-based prototypes. In addition, as a secondary aim, this study investigates how the demographic characteristics of participants affect their perception of empathy in a mental health helpline service context. The dataset refers to this participant group recruited through the Swinburne Research Experience Program.