<human>:  How can I fix a puncture in my bicycle tyre?
<bot>: First, you should make sure you have the right tools and materials. You will need a puncture repair kit, a pump, and tire levers. You should start by deflating the tire completely, then use the tire levers to take the tire off the wheel. Once the tire is off, you should remove the punctured tube and use the puncture repair kit to patch the hole. Finally, reassemble the tire and pump to the correct pressure.