Dear Mr. Brown,
First of all , thank you for your help during my business trip in the United States .
I think it is my turn to treat you .
If you do not mind , I will take you to Korean Folk Village .
In addition , I will introduce some Korean food to you .
Everything may be new to you , but I assure you that it will be a precious experience .
I hope you are willing to accept my offer .
I will see you next Friday .
Sincerely, John Kim