Mario Parlato, owner of the restaurant La Terrazza delle Sirene at Sorrento, said he was "tired" of young people asking for the weekend off. He said the robots would not, however, ever fully replace humanwaiting personnel.

"They can accompany clients to their tables, bring the dishes and drinks, but the politeness and'sympathy' of those who do this job are irreplaceable," he said. He added: "I'm happy I took this decision to use AI-fitted devices." The restaurant is located on the Amalfi Coast, near the town of Bagnoli. For confidential support, call the Samaritans in the UK on 08457 90 90 90 90, visit a local Samaritans branch or see www.samaritans.org for details. In the U.S., call the National Suicide Prevention Line on 1-800-273-8255 or visit http://www.suicidepreventionlifeline.org/.