We are calling to 'confirm your appointment' with Dr. Jones. = We are calling to make sure that you will 'keep your appointment' with Dr. Jones.
The museum is open to visitors 'by appointment' only. [=you have to make an appointment to visit the museum]
The court ordered the 'appointment' of an attorney to represent the child.
(..) in my room. Okay. But after Mr. Dennis has finished to getting ready with the ritual. I have to go. He's got an appointment. When I fall sleeping, one of the others keep trying to reach what the doctor lady tell on us. That pant, it's got a red lining. You can see it down the side. (..)2016 Split
(..) Barry. I don't think you are. I've developed a nose for sensing whom I'm talking to and whom I'm not. Have I done something? You've emailed for an unscheduled appointment two days in a row. I just feel overwhelmed, I've gotten some issues. I think Orwell, or Jade, or Samuel.. (..)2016 Split