NO_RESPONSE_NEEDED, the agent stays silent instead of speaking a reply. The caller does not hear these words. To use this behavior, add an instruction such as:
Customize the synthesized speech
Make the agent stay silent
Prompt a Retell AI agent to output NO_RESPONSE_NEEDED to stay silent when a caller asks it to wait.
You can prompt the agent to stay silent when a caller says “hold on” or “give me a minute.” This is a conversational pause, not a telephony hold.
When the model outputs