<human>:  Why do people use Uber instead of a taxi?
<bot>: Well, Uber is more convenient because it is cheaper and the drivers are more reliable. You can request a ride from anywhere, and you can track the driver's progress on a map. In addition, you can request a ride at any time of day or night. Taxi companies can only offer rides during their hours of operation, which is usually limited to the morning and evening rush hours.