Sarah: Where were you this morning?
Luke: I was out with my parents
Sarah: Why you didnt reply back?
Luke: I left my cell at home
Sarah: Can you come over my place now?
Luke: Is everything ok?
Sarah: Will let you know when you would come
Luke didn't respond to Sarah's message because he was out with his parents all morning and didn't have his phone on him. Sarah wants him to come over.