The Lenny phone bot will talk, and then will wait until it hears a noise. After it hears a noise, it will wait for silence before talking again. If it cannot detect noise or silence properly, press the space bar to adjust the "silence" bar. This changes what the minimum "loudness" level the phone bot considers as noise.
The phone bot has a list of preset phrases to say. It will say one, then wait for a silence, and then say the next phrase in the list. It doesn't know exactly what you are saying, only when you are talking and when you are silent. I made this project to test the "loudness block", a block that I haven't used very much. Voices are from the original Lenny phone bot, originally created in 2011.