Trying to use chartSeries in quantmod

colnames = c("date","price")
data = read.csv(file="data.csv", sep=",", header=F, nrows=261, skip=5, col.names=colnames)
library(quantmod)
data

date   price
1   2011-12-18 13.7825
2   2011-12-11 13.5500
...
...
...
259 2007-01-07 10.8256
260 2006-12-31 10.8531
261 2006-12-24 10.8169

# Here's where I would like to use chartSeries from quantmod, but I'm
stumped, so I try several different things

chartSeries(date, price, data=data)

Error in try.xts(x, error = "chartSeries requires an xtsible object") :
  chartSeries requires an xtsible object

?chartSeries
chartSeries(date, price, type="candlesticks", theme = chartTheme("black"))

Error in try.xts(x, error = "chartSeries requires an xtsible object") :
  chartSeries requires an xtsible object

chartSeries(date, price, type="candlesticks", theme = chartTheme("black"), subset='2007::2008-01')

Error in try.xts(x, error = "chartSeries requires an xtsible object") :
  chartSeries requires an xtsible object


Help is appreciated very much!