Alternatively...
You can open a 3-way group chat on facebook with myself or Tim Matthews, and introduce your referral that way.
To save you time, you can use this message as your own:
"Hey Name , I wanted to introduce you to Joe/Tim.
He helps run the online Dietitian service I was telling you about. The service has been very effective and I thought you might like to hear more about it.
Joe/Tim, Name is a friend of mine who I know you can help with their health goals. Please give them the same VIP treatment you have me!
I’ll let you two take it from here. Please let me know if either of you need anything in the meantime.