title: get data patterns in HTML
body: <p>my goal is to write some lines of R code which allow me to make web scraping from</p>
  
  <p><a href="http://www.skyscanner.it/trasporti/voli/mila/fran/180201?adults=1&amp;children=0&amp;adultsv2=1&amp;childrenv2=&amp;infants=0&amp;cabinclass=economy&amp;rtn=0&amp;preferdirects=false&amp;outboundaltsenabled=false&amp;inboundaltsenabled=false&amp;ref=home#results" rel="nofollow noreferrer">www.skyscanner.it/trasporti/voli/mila/fran/180201?adults=1&amp;children=0&amp;adultsv2=1&amp;childrenv2=&amp;infants=0&amp;cabinclass=economy&amp;rtn=0&amp;preferdirects=false&amp;outboundaltsenabled=false&amp;inboundaltsenabled=false&amp;ref=home#results</a></p>
  
  <p>getting: airline, departure and arrival airportS, departure and arrival timeS, price.</p>
  
  <p>I decided to use the Rcrawler package (<a href="https://github.com/salimk/Rcrawler" rel="nofollow noreferrer">here how it works</a>) but, having no experience of HTML, i've no idea of how to set the ExtractXpathPat option to get data.</p>
  
  <pre><code>    Rcrawler(Website = "https://www.skyscanner.it/trasporti/voli/mila/fran/180201?adults=1&amp;children=0&amp;adultsv2=1&amp;childrenv2=&amp;infants=0&amp;cabinclass=economy&amp;rtn=0&amp;preferdirects=false&amp;outboundaltsenabled=false&amp;inboundaltsenabled=false&amp;ref=day-view#results", 
  no_cores = 4, no_conn = 4, ExtractXpathPat = c("?????"))
  </code></pre>
  
  <p>What should i do? How can i learn how to set path?
  Thanks!</p>