A: I'm calling because I need to reschedule my appointment. B: What was the original appointment date and time? A: I am supposed to come in on Thursday at 10 in the morning. B: Are you Tina Williams? A: That's me. B: When would you like to reschedule the appointment for? A: Can Dr. Harris see me next Tuesday at 10? B: He doesn't have an opening that day until noon. A: I'll have to come on my lunch break then. B: So shall I give you that appointment time? A: Yeah, put me down for that time. B: Just let us know 24 hours in advance if you need to cancel or reschedule.