Dear Frank,

Do you want to go and hang out with us because we still missing some people to play sport and if you go , It should be more fun. You seem not use to hang out so I want you to join us so you can Interact with us and make friends. More friends should be more fun right!We not decided yet to play which sport. May be incident we will choose a sport that you know how to play so we would like you to teach us. I hope you join us and make friends. You can tell your friends and join with us to we would be happy if there are more people. Hope you accept us and play with us. Good bye!
Your new friend
David