<human>:  How do I fix a clogged sink drain?
<bot>: 
1. Start by locating the clog. If the clog is in the sink drain, you can use a plunger or drain snake to try and remove the clog. If the clog is further down the pipe, you can use an auger to break up and dislodge the clog.
2. If that doesn't work, you can try a chemical drain cleaner, following the instructions on the label carefully.
3. You can also try boiling water. Carefully pour a pot of boiling water down the drain, let it sit for a few minutes, and then flush the drain with cold water.
4. If none of these methods work, you might need to call a professional plumber for more extensive repairs.