<human>:  How can I fix the flat tire on my bike?
<bot>: The first step to fixing a flat tire on a bike is to remove the wheel. Then, use tire levers to remove the old tyre from the rim. Once the old tyre is off, inspect the inner tube for the source of the leak and patch the hole if possible. If the inner tube is beyond repair, replace it with a new one. After the tube is inflated, check the pressure and reinstall the tyre onto the rim. Lastly, remount the wheel on the bike, and your flat tire will be fixed.