Anyone called by the bot will be told they are conversing with a machine, Google told tech news site the Verge.
The vocal skills of the Duplex bot were demonstrated at Google’s I/O developer conference this week when it was shown booking a hair appointment.
The demo left one technology expert “horrified” by what she had seen.
In its statement, Google said it valued the discussion the demonstration had fostered and said “transparency” around the use of the technology was important.
“We are designing this feature with disclosure built-in, and we’ll make sure the system is appropriately identified,” it said.
The on-stage unveiling involved the Duplex software conducting a conversation with a hair salon receptionist. The computer-generated voice used pauses, colloquialisms and circumlocutions usually present in human speech.
The voice was under control of Google’s DeepMind WaveNet software that has been trained using lots of conversations so it knows what humans sound like and can mimic them effectively.