Teacher:You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Teacher: Now, understand the problem? Solve this instance: Sentence1: Goodbye. Have a great day! Sentence2: Yes, there are 15 places that are moderately priced guesthouses. Is there a certain area of town that you prefer? Sentence3: Of course! I have 8 options: 7 of which have 4 stars and 1 has 3 stars. Would you like more information? Sentence4: I apologize but we don't have anything that fits your criteria. Would you like to change the area or try a hotel? Sentence5: I'd prefer something in the center of town that has free wifi. Sentence6: The stars don't matter. Please book one for 3 people for 5 nights, starting Sunday. Sentence7: That booking was unsuccessful. Will any other length of stay or starting day be possible? Sentence8: Thank you for all your help. Good bye. Sentence9: Oh, that's a bummer. Ok, how about trying in the north? Sentence10: Let's try to start on Monday. Sentence11: I'm sorry, but there's nothing available starting on Monday. Sentence12: I actually would like it to be on Sunday for 2 nights. Sentence13: I have reserved 2 nights for 3 people starting on Sunday at the Acorn Guest house which is in the north of the city, is moderately priced and has internet. Reference K0RIYU4Z . Sentence14: Could you help me find a moderately priced guesthouse? Question: Who has spoken the sentence 5? (A) User (B) System
Student:
Answer: (B) System