Invitations to Church Members encouraging them - and their non church friends - to attend

Something simple along these lines is fine
Best if they can be handed to the potential guests with a brief re-assuring conversation explaining that there is no hidden agenda - it really is a free lunch!

Let’s Do Lunch

Come and join in informal conversations between friends. I’d like to invite you to join me for lunch on Insert day, month, date  at Insert venue, start time. There is no agenda, there is no formal topic. Just a chance to meet together and share our thoughts.

Please bring a guest who you  might wish us to meet and may be interested to  share in our conversation.
There is no charge. 

“... they had their meals together in their homes, eating with glad and humble hearts, praising God, and enjoying the good will of all the people. And every day the Lord added to their group those who were being saved.”
Acts 2: 46-47: Good News Bible

R.S.V.P. (For numbers and dietary requirements)
Your name and email contact
Your address
Your Telephone number