Billie : "Hi Jennie, I have something to tell you. Are you free now?

jennie : "Hi bil, yes I'm free now. So what is it about?"

billie : "Uhm actually my mom told me that she will set up a birthday party for my brother tonight. And she ordered me to invite you because you're my best friend. Will/would you come to the party tonight?"

jennie : "Tonight? Wow, that is so sudden. And i'm sorry bil, I have an appointment with my sister to go to cinema tonight. I promised her"

billie :"oh i'm sorry Jen, I don't know about that. But that's fine, no need to sorry. Because you have promised her"

jennie : "i'm so sorry Billie, maybe i'll talk to him later. I'll congratulate him"

billie : "thank you Jen, you're so kind"

jennie : "no problem bil"