The conversation between human and AI assistant.
Which city is better to live, Dubai or Riyadh?
Which city has a better transportation system?
Dubai has a very advanced transportation system that includes a metro system, buses, and taxis. The city also has a modern international airport with connections to destinations all over the world. Riyadh is also working to improve and expand its transportation options, including its metro system, but it's not as advanced as Dubai's system.