Given the task definition and input, reply with output. You are given a conversation between two people. 'Person1:' and 'Person2:' are used to separate their respective dialogues. If the conversation begins with a question, label it '1' otherwise '0'.

Person1: Here you are at last ! You're half an hour late , you know .
Person2: I'm awfully sorry to have kept you waiting for so long .
Person1: What happened ?
Person2: My watch stopped and I didn't know . I certainly need to buy a better one .
0