<human>:  Can you recommend an electric bike that fits my needs?
<bot>: I would recommend the Rad Power Bike RadCity Step-Thru electric bike. It is designed for comfortable and efficient bike commuting, with 4-inch tires, a low-step frame design, and a 250W motor. It has a 48V 14 AH battery capacity which gives you up to 45 miles of range, allowing you to take it on most errands or ride it around town. It also has 7 levels of pedal assist mode, meaning you can get a boost of power if you find yourself in a tough spot.