#name1 = name of first person
#name2 = name of second person
#yon = yes or no
#Printname function = asks name and prints greeting


def Printname():
    name1 = raw_input ("What is your name?")
    name2 = raw_input ("What is your friend's name?")
    print "Hello!", name1
    print "Hello!", name2
    Rep()
def Rep():
    rep = raw_input ("Would you like to do it again? Y or N")
    if rep == "Y":
            Printname()
    elif rep =="N":
        Nothx()
    else:
        Error()
        Rep()
def Nothx():
    print "Okay, Goodbye!"
def Error():
    print "You have pressed an incorrect key."
yon = raw_input ("Would you and your friend like a greeting? Y or N")
if yon == "Y":
    Printname()
elif yon =="N":
    Nothx()
else:
    print "You have entered an incorrect key"