in software engineering draw the sequance diagram in this process$(1-$Patient try to enter into system

$2-$ Check if the Username and password correct if No

Patient can$$t enter to his account and return back try to enter into system

if yes : $1-$ Patient enter to his account

$2-$ View the available appointment

$3-$Patient choose the suitable appointment

Check if any changes occur to the appointment if No :Appointment booked

and close process $,$ if yes : $1-$Received notification

$2-$Patient choose another appointment$)$