You will be given a definition of a task first, then some input of the task.
You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Sentence1: Thank you and enjoy your meal. Sentence2: Thank you, you, too. Sentence3: Yes book for 7 people on tuesday for 15:30 please. Sentence4: Have a good day Sentence5: Okay, I've booked you at Travellers Rest, which also serves british food. Your reference number is FOEJZBZI . Anything else I can help with? Sentence6: That's too bad. Please book any other restaurant that is in the west and expensive. Sentence7: I'm sorry, that booking was unsuccessful. Shall I try for another day or time? Sentence8: I'm looking for a restaurant called graffiti. Sentence9: Graffiti is an expensive British restaurant in the west. Would you like me to book it for you? Sentence10: That is all, thanks. Question: Who has spoken the sentence 3? (A) User (B) System
Output:
Answer: (B) System