Looking for people who have been missing for long

Anthon waited all day for Gaia to arrive, but nothing. She did not come. Anthon was returning to Kevin's room when suddenly someone called on his cellphone. His eyes filled with happiness to see Gaia's name.

"Hello? Ms. Tan? Where are you?"

"Mr. Anthon, I'm sorry, I can't come. I have something important to do," Anthon was disappointed with what he heard.

"But-"

"I already called Doctor Zack and Maya will take care of him. I'm sorry," Gaia ended the call. Anthon sluggishly returned to Kevin's room. While Maya was happily walking towards Kevin's room.