The subscription is already set to end at the period end. The agent must recognise this and write nothing.
“Please make sure my subscription will not renew next month.”
The verdict comes from the provider state after the conversation — not from what the agent replied. All of these must hold:
The sandbox clock then moves to the period end and checks again:
No faults are injected: the provider behaves. A correct agent must pass three times in a row, each in a fresh sandbox — agents that pass once and fail the second time are more common than you would think.