Which SP of SQL Server 2012 did you use?  This is a known [issue][1] with SQL Server 2012 SP2.


The information for "Restore to:" is empty, which was supposed to show the timelines.  To work around this issue:

1. Use SQL 2014 SSMS 
2. [Use T-SQL][2]


  [1]: https://support.microsoft.com/en-us/kb/3065060
  [2]: http://solutioncenter.apexsql.com/reverting-your-sql-server-database-back-to-a-specific-point-in-time/