[1] pry(main)> Appointment.all

# Our first appointment using the appointment class to create an appointment
=> [#<Appointment:0x007fd92022b2e8
  @date="2018-11-15",
  @doctor=#<Doctor:0x007fd92022b478 @name="Dr. James Johnson">,
  @patient=#<Patient:0x007fd92022b428 @name="Kody Clemens">>,

 # Our second appointment, created using the patient instance method
 #<Appointment:0x007fd91fbcd3b0
  @date="2018-11-15",
  @doctor=#<Doctor:0x007fd92022b478 @name="Dr. James Johnson">,
  @patient=#<Patient:0x007fd91fbcd4f0 @name="Carl Nicholson">>,

 # Our third and final appointment, created using the doctor instance method
 #<Appointment:0x007fd920027398
  @date=#<Doctor:0x007fd920027578 @name="Dr. Alex Weaver">,
  @doctor="2018-11-15",
  @patient=#<Patient:0x007fd92022b428 @name="Kody Clemens">>]