Input$/$Output:

Enter Name: Adam

Hi Adam, your appointment is confirmed at $2$ PM

Enter Name: Bob

Enter time: $4$

Invalid slot, please choose either $1,2$ or $3$ pm slot

Hi Bob, your appointment is confirmed at $1$ PM

Slot Not Available, please choose another slot

Slot Not Available, please choose another slot

Hi John, your appointment is confirmed at $3$ PM

$1$ Bob

$2$ AdamYour task is to create a doctors' appointment system. Patients are only allowed to book an appointment with the doctor at $1,$

$2$ or $3$ PM$.$ Use an appropriate collection to store patients' preferred time slot and their name. Write a loop that iterates as

long as there is an empty space in the doctors' schedule.

Allow the patients to enter their preferred time and name. In case the time slot is available, put the time and patients' name

into your chosen collection and print $"$Hi $3pm-$