Photo taken on June 16, 2020 shows safe zones for customers in a restaurant in Istanbul, Turkey. An upscale restaurant in Sutluce on the European side of the city is making its customers feel relaxed inside of a safe zone, which looks like a bell jar, fully protected and sterilized against COVID-19. (Photo by Osman Orsal/Xinhua)

Customers have dinner at a safe zone in a restaurant in Istanbul, Turkey, June 16, 2020. An upscale restaurant in Sutluce on the European side of the city is making its customers feel relaxed inside of a safe zone, which looks like a bell jar, fully protected and sterilized against COVID-19. (Photo by Osman Orsal/Xinhua)

Photo taken on June 16, 2020 shows a safe zone for customers in a restaurant in Istanbul, Turkey. An upscale restaurant in Sutluce on the European side of the city is making its customers feel relaxed inside of a safe zone, which looks like a bell jar, fully protected and sterilized against COVID-19. (Photo by Osman Orsal/Xinhua)

Photo taken on June 16, 2020 shows safe zones for customers in a restaurant in Istanbul, Turkey. An upscale restaurant in Sutluce on the European side of the city is making its customers feel relaxed inside of a safe zone, which looks like a bell jar, fully protected and sterilized against COVID-19. (Photo by Osman Orsal/Xinhua)

Customers wait for their dinner at a safe zone in a restaurant in Istanbul, Turkey, June 16, 2020. An upscale restaurant in Sutluce on the European side of the city is making its customers feel relaxed inside of a safe zone, which looks like a bell jar, fully protected and sterilized against COVID-19. (Photo by Osman Orsal/Xinhua)

Photo taken on June 16, 2020 shows a view in a safe zone in a restaurant in Istanbul, Turkey. An upscale restaurant in Sutluce on the European side of the city is making its customers feel relaxed inside of a safe zone, which looks like a bell jar, fully protected and sterilized against COVID-19. (Photo by Osman Orsal/Xinhua)