Sarah: Hi! 
Sarah: SORRY, I totally forgot to tell you that I'm going to Rome for a conference this Friday and I can't meet you...
Paul: Oh, I was just about to text you and ask you when we could meet...
Paul: well.. what about Thursday after work?
Sarah: It's doable but I'd have to check my workload
Sarah: Sometimes it gets crazy on Thursdays and I don't get off until 6-7 pm...
Paul: OK, when will you be able to tell for sure?
Sarah: Tuesday at the latest
Sarah: Sorry again for the inconvenience.
Paul: Don't worry about it.
Paul: I've cancelled our lessons last minute more than once... ;)
Sarah: Thanks
Sarah: I'll try to make it work and will get back to you tomorrow.
Paul: OK, take care, Sarah :)
Sarah: Byee :)
Sarah won't be able to come to her lesson with Paul this Friday. She's going to Rome for a conference. She'll let him know when they can meet instead until Tuesday. It's not the first time their lesson has been cancelled at the last minute.