How to extract date in dd-mmm-yyyy from string using regular expression : I am not good at creating  regular expression.can any one help me  with  that.I need to extract  Date Time from Following string.  This  Date time format remain constant and not going change.Can any  one help me with that

Composed by super, mtzshm to super, mtzshm on 31-Mar-2016 02:24 with Normal priority and Message Type General Message
	 Composed by super, mtzshm to (Group)My Favorites on 31-Mar-2016 02:24 with Normal priority and Message Type General Message 
	 Attached by super, mtzshm on 31-Mar-2016 02:24
	      Patient: MTzPatient, 89107
	      Chart: 31-Mar-2016 02:23
	      Visit: 31-Mar-2016 17:22
	 Displayed by super, mtzshm on 31-Mar-2016 02:24
	 Displayed by super, mtzshm on 31-Mar-2016 03:14