Display name for shared mailbox

Hi, by our customer I just installed new exchange 2013 server. I have created severalls shared mailboxes. And now, the customer want, that when somebody from the company send, or answer to an email, the recipient can see how has send the email. For example, the shared mailbox has display name "Service", user who has full access to this shared mailbox has display name "John", is there any way to merge these display names, so the recipient can see for expample "Service - John" as sender of the email?

Thanks