As a user that want to make search
I can write a request in a natural language
In order to display the mails.
**Scenario**
Given I have the list of email and today it's 2016/03/18
| **SUBJECT **| **DATE **| **NAME **| **STATE **|
| KDE : Dynamics Project | 2016/02/16 | John | unread |
| KDE : Dynamics PAQL KMail | 2016/02/17 | Franck | unread |
| Qt : Assasin project | 2016/03/15 | John | unread |
When I write "Unread emails from John from the last two weeks" in search bar
Then the natural language is parsed as "Receiver is John" AND "DATE>2016/03/04" AND "state="unread" and the result will be :
| **SUBJECT **| **DATE **| **NAME **| **STATE **|
| Qt : Assasin project | 2016/03/15 | John | read