Read the dialogue below carefully.

Ahmad	: My family and I are planning to go to Kaliurang. Would you like to join us?
Aisyah	: Thank you. I’d like to very much.
Ahmad	: We will celebrate Adam's graduation this weekend by having dinner in our villa there. I’d like you to come to our villa at 6 in the evening.
Aisyah	: I’d love to, but I’m afraid I can’t. I must take my father to the hospital Saturday night.

Who will celebrate Adam's graduation?