Everyone appreciates being notified of their kind efforts through a sincere thank you note, which can also build relationships and foster goodwill. To write an effective thank you note:
Be brief - 3 to 5 sentences is sufficient
Try not to start off by saying thank you. Instead say something like “I enjoyed our dinner on Friday” then add your thoughts on the dinner with a “Thank you”.
Add a compliment on meal or host, such as “You’re always such a gracious hostess” or “Your home always looks so lovely”.
Finally provide a positive comment about the future such as “It was a pleasure seeing you and I look forward to seeing you again on Saturday”.