Definition: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Input: Sentence1: I need to arrive at Broxbourne by 16:45 Sentence2: Okay, I've booked a table for you and your guests at Haaka on Milton Road in Chesterton. Your reference number is U47769KH . Sentence3: I need to leave on Saturday. Sentence4: Can you book it for me and get a reference number ? Sentence5: Are there any in the north side of town? Sentence6: Thank you! I also need a train going to Broxbourne. Sentence7: any price range is fine with me. please book for mea table for 8 peopleat 13:45 on friday. please get me the reference number Sentence8: a train leaves every hour from cambridge to broxbourne. Is there a particular day and time you need? Sentence9: I'm looking for a Chinese restaurant. Sentence10: There is a moderately priced one in the City Centre, a noodle bar. Sentence11: I have three can I get you price range? Sentence12: Sure, I can help you with that. Where were you wanting to depart from? Sentence13: What time do you need to arrive at your destination or depart? Sentence14: i'm leaving from cambridge Question: Who has spoken the sentence 3? (A) User (B) System
Output:
Answer: (B) System