I’m trying to implement <Say> when a conference end. The scenario will be a customer will make an inbound call then make a conference then an agent will join the conference then the conference will start. When the agent hangup the customer will should hear the <Say> . The problem is when the agent left the conference also end

here is the sample TwiML I did but the <Say>End Conference Say</Say> did not execute.

Hoping someone can please help me what is the issue and how can I make it work?

I tried this code here but it didn’t work