The system prompt the agent ran with (outbound: outboundInstruction; inbound: the number's inboundInstruction snapshot).
The same conversation as transcript, split into timed turns and ordered by
startMs. Read it to analyse pacing rather than just wording: the pause
before a turn is its startMs minus the previous turn's endMs. Null when
the call has no transcript, and on calls that finished before Dial recorded
turn timing.
Timestamp the call was cold-transferred to transferTo, or null if no hand-off occurred.
Forward-to number (E.164) requested at placement, or null when no transfer was requested.
Why the call failed, when Dial knows the cause. See CallFailureReason.