phoneBookDict = {
    'Alice': '703-493-1834',
    'Bob': '857-384-1234',
    'Elizabeth': '484-584-293'
}
#1
print(phoneBookDict['Elizabeth'])

#2
phoneBookDict['Kareem'] = '938-489-1234'

#3
phoneBookDict['Alice'] = None

#4
phoneBookDict['Bob'] = '968-345-2345'

#5
print(phoneBookDict)
