light travelling

phrase = input ("talk to me >")
if phrase == "hi" or phrase == "hey":
    print ("hello")
elif phrase == "whats your name" or phrase == "what's your name":
    print ("Marvin")
elif phrase == "I dont' want to talk" :
    print ("so answer me how old are you")
else:
    print ("sorry, I don't understand")
answer = input ("then I have some questions >")
if answer == "ok" or phrase == "no problem":
    input ("how fast travel the light?>")
    if "how fast travel the light?" == "300 m/s":
        print ("right")
print ("bye")