convert csv to kml or geojson, etc using ogr2ogr (use "latitude" and "longitude" attributes for coordinates)

I've just unsuccessfully tried to use ogr2ogr to convert CSV into KML like so:

ogr2ogr -f "KML" output.kml input.csv

The csv has "latitude" and "longitude" columns.

The attributes are all loaded but if you inspect the KML's text, the Coordinate elements are not being added so its not working.

I feel like this will work if I can inform gdal to interpret certain columns ("latitude", "longitude") as coordinates. How might I do this?

Thanks