Hello! I'm John. I need an appointment with Dr. Johnson for today (Friday). I've been coughing with a sore throat for two whole days!
At what time can you be at the clinic?
Well, it's 6 pm now, and I would like the next available appointment.
Unfortunately Dr. Johnson has no appointment available at .
Can you keep going until you find the next available appointment. 
He has a Saturday 7am. Would that be ok?
If that is the soonest then that is fine. I have had a good day otherwise. I won a contest today!
Congratulations! Your appointment has been booked. 
You know, I just realized that my daughter Anglea needs a vaccine. Can I get her an appointment at the same time as me?
I will add to the notes that you are bringing Angela for a vaccine. 
Okay, that is great. She is a great kid but so busy all the time. A typical teenager. 
Teenagers are usually on the go. We will see you both on Saturday. 
I am looking forward to feeling better. Thank you very much. Goodbye. 
Thank you and goodbye.