I called a taxi and it stopped near me. I asked the driver if he could take me to the airport because I had to take the 11.20 plane. I got on the taxi and I immediately noticed a bag on the rear seat. I asked if it was his but he answered that it wasn't his and added that an old man who had taken the taxi before me had forgotten it. When I arrived at the Airport a taxi stopped next to my taxi. An old man got off the taxi and told the taxi driver that it was his bag.