<human>:  How do I fix a flat tire on a bike?
<bot>: 
1. First, you'll need to remove the wheel with the flat tire.
2. Use a tire lever or a stiff flat object such as a butter knife to remove the tire from the wheel's rim.
3. Take out the tube and inspect for a puncture.
4. Slide the tube inside the tire, ensuring that the valve faces the wheel's rim.
5. Reattach the wheel to the bike, re-tightening the axle nuts or latching the quick-release levers.
6. Make sure the wheel is properly aligned in the dropouts before you take the bike out on the road.