username = ""
password = ""
logout = ""
logout1 = 0
while logout1 == 0:
    username = raw_input("Username")
    password = raw_input("Password")
    if username == "carllll" and password == "oklahoma1":
        print "Hello Carl."
        logout1 = 1
    if username == "pyrofreak143" and password == "lozer":
        print "Hello George."
        logout1 = 1
    if username == "Jazi" and password == "jazi":
        print "Hello Matt."
        logout1 = 1
    else print "error, please ask carl to input your name/password into the database"

while username != "":
        logout = raw_input("Would you like to logout?")
if logout == "yes":
    logout1 = 0
if logout == "no":
    logout1 = 1