birthdays={'Alice':'Apr 1','Bob':'Dec 12','Carol':'Mar 4'}
while True:
	print("Enter a name: (blank to quit)")
	name=input()
	if name == '':
		break

	if name in birthdays:
		print(birthdays[name]+ 'is the birthday of '+name)
	else:
		print('I do not have birthday information of '+name)
		print('What is their birthday?')
		bday=input()
		birthdays[name]=bday
		print('Birthday database upadated.')
