Messages not syncing with MacBook Pro
When replying to iMessages through Messages on my MacBook Pro, the messages are syncing but the name of the person is not. It's just giving me their phone number. On my iPhone 7, their name does appear.
How do I make it so that when the messages sync that their name is the one that appears on the message and not their phone number?
Thanks
MacBook Pro, OS X Mountain Lion (10.8.1)