Need a regex pattern to find a string between two strings

Hi
I am looking to get the customer's name  from a multi-page computer generated document.  In these documents, then name of the customer always follows the pattern shown below.  


1) Customer Information                  ----- (string constant)
2) Customer                                       ------ (string constant)
3) Customer Name                           ------ (information being sought)
4) Contact Telephone Number ----------  (string constant)

It actually looks like this in the document.  There is a line feed after each string constant  and customer name.

Customer Information
Customer
John Doe
Contact telephone number


There would only be one instance of a customer per document. Could someone help me with the regex pattern please.  

Thank you.