Are the following sentences natural to a native ear?
1. Much of my work involves talking to people. OK.
2. Up to what appointment do you have people already present here? ( I was at a clinic without an appointment and wanted to know if there is a chance of a cancellation. Generally, people cancel their appointments by phone. I wanted to know until which appointment, people have already showed up at the clinic) It would be much simpler to ask "Do you have any cancellations?"
3. Both of them did not want to have to do anything with each other. "Neither of them wanted to have anything to do with the other."
Student or Learner