Jack chuckled at the retort. With a face like that, he was sure he didn't need to be all too good with his hands to not get complaints. Jack would have even liked to show him how good of a doctor he could be. But then there would be more blood and even if the man was an Immortal, he didn't know what kind of person worked for the FBI and whether it would be a good idea to show his talents to him.
A mischievous smirk spread across his lips. "Two glasses of wine... And I only give my number to those that really want it." Looking up his name in some system would not bring up any phone records, Jack couldn't be searched by any modern system. All his numbers were so deeply routed that even the best couldn't find his trail- that was part of being Jack the Ripper.
Jack was ever polite as his words took a professional tone to them. "Otherwise, I suppose you could call my lab. And when I am finished with my report on the body... well, I should get that direct line you wish for me to call with the information."