Concatenate two fields- Look up and date field into a text field

Hi,

I have a requirement to Concatenate look up field and date field into a text field.  We are doing this with an out of box work flow

“Name”: . Value must be ‘First Name’ + “ “ + ‘Date of Birth’

First Name: ABC

DOB: 11/11/1981

Name : ABC 11/11/1986 12:00 AM

We don't need to display the time in the NAME field. Could anyone tell us how to get rid of time?