tolong buatkan dialog 3 orang yg bersifat formal invitation

Tommie : Hello Dianna & Charles, how are you?
Dianna : we're finealright, what about you?
Tommie : I am fine, too. I got a brochure that there will be Shinta on 7 concert on next Sunday.
Dianna : Whoah, I just knew that.
Charles : me too.
Tommie : Yeah, that’s why I tell you now, because you are a big fan of Shinta on 7. I want you two to come to the concert with me if you don’t mind.
Dianna : we're so sorry. we'll have a vacation to Seoul that day
Tommie : Oh, never mind