How to get two or more matching tags in a xml file using regular expression

I need help on regular expression in the below xml code I want to extract values in two tags (title,price) at a time so that my output should look like

Output required:

  <title lang="en">Everyday Italian</title>
  <price>30.00</price>
  <title lang="en">XQuery Kick Start</title>
  <price>29.99</price>
  <title lang="en">XQuery Kick Start</title>
  <price>49.99</price>
  <title lang="en">Learning XML</title>
  <price>39.95</price>

Right now I am using:

   ^\s*<title>.*</title>

this code is fetching only <title>

  <title lang="en">Everyday Italian</title>
  <title lang="en">XQuery Kick Start</title>
  <title lang="en">XQuery Kick Start</title>
  <title lang="en">Learning XML</title>

How to get two tags at a time? can some one help me

XML:

    <?xml version="1.0" encoding="UTF-8"?>
    <bookstore>
    <book category="COOKING">
      <title lang="en">Everyday Italian</title>
      <author>Giada De Laurentiis</author>
      <year>2005</year>
      <price>30.00</price>
    </book>
    <book category="CHILDREN">
     <title lang="en">Harry Potter</title>
     <author>J K. Rowling</author>
     <year>2005</year>
     <price>29.99</price>
    </book>
    <book category="WEB">
      <title lang="en">XQuery Kick Start</title>
      <author>James McGovern</author>
      <author>Per Bothner</author>
      <author>Kurt Cagle</author>
      <author>James Linn</author>
      <author>Vaidyanathan Nagarajan</author>
      <year>2003</year>
      <price>49.99</price>
    </book>
<book category="WEB">
   <title lang="en">Learning XML</title>
   <author>Erik T. Ray</author>
   <year>2003</year>
   <price>39.95</price>
</book>
</bookstore>