Need Help changing spreadsheet format

Hello everyone
I have a Room# and follow-up dates spreadsheet that looks like this:

Room#   1 Month       3 Month        6 Month        9 Month
3456     7/14/2013     9/14/2013     12/14/2013    3/14/2014
1587     8/1/2013      10/1/2013      1/1/2014       4/1/2014
0164     9/11/2013     11/11/2013    2/11/2014     5/11/2014

Is there any way to change the format to something like this:

Room#   Follow-up period     Date
3456      1 Month               7/14/2013
3456      3 Month               9/14/2013
3456      6 Month               12/14/2013
3456      9 Month               3/14/2014 
1587      1 Month               8/1/2013

and so on ......
If it's possible i really appreciate your help. Thanks