Hi, Is Dr. Johnson available today?
Could I have your name, please?
Yes it's John.
What day of the week would you like to schedule the appointment for?
Monday, today.
At what time can you be at the clinic?
Any time today will be fine. 
Could you describe your symptoms, please?
I have a cough and sore throat for two days now. 
Alright, Dr. Johnson is available at 5 am. Can I book the appointment for you?
Yes that works. If possible I would like to have my son Ben seen as well. He needs vaccinations.
He is available for that too. Can I book an appointment?
Yes please, thanks!
Great, your appointment with Dr. Johnson is booked for you!