Q: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Sentence1: I didn't happen to have any barbeque restaurants but I did find a japanese restaurant in the centre of town. It's called Wagamama. Can I book that for you? Sentence2: Ok. Where are you going? Sentence3: The acorn guest house is the highest recommended guesthouse with 4 stars. Sentence4: Not really, but which of these have the best rating? Sentence5: Yes I'm looking for somewhere to eat that does barbecue? Is there anywhere like this in the city center? If there's no barbecue, what about Japanese? Sentence6: Yes their address is 36 Saint Andrews Street. Will there be anything else? Sentence7: You're very welcome. Thanks for contacting us here at the Cambridge TownInfo centre and I hope you have a great day! Sentence8: Yes, that will work. Can I get the restaurant address please? Sentence9: I have several places that meet your needs. Is there a specific part of town you'd like to stay in? Sentence10: I guess first I'd better find a place to stay. I'm looking for a moderately priced guesthouse and it should include free wi-fi and parking. Sentence11: Ok, could you give me the address, phone number, and postcode please? Sentence12: No, that is all I need at this time. Thanks for your help. Have a nice day. Sentence13: I need a taxi. Sentence14: Certainly, acorn guest house is located at 154 chesterton road, postcode cb41da, and their phone is 01223353888. Can I help you with anything else? Question: Who has spoken the sentence 3? (A) User (B) System
A:
Answer: (B) System