You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

[EX Q]: Sentence1: i am sorry. i have double checked and still do not find anything matching your criteria. would you like a different star rating? Sentence2: I can help with that. What kind of price range do you have in mind? Sentence3: there are a variety of good things in the north it depends on what you want i will find whatever you request Sentence4: There doesn't appear to be a 4 star hotel with wifi in the north. Can I interest you in a lower star rating? Sentence5: i need a hotel with wifi in the north part of town Sentence6: Perhaps there is a guestroom? Sentence7: No but would you like to try another location ? Sentence8: No, the hotel needs to have a 4 star rating. Can you please check your system again? Thanks Sentence9: I am open as far as price range, but I would love a 4 star place. Sentence10: No I need the north. Is there anything else available in the north? Question: Who has spoken the sentence 3? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: No thank you, goodbye. Sentence2: I'm sorry, there are no Korean restaurants in the north part of town. Can I help you find anything else? Sentence3: Thank you for using our system. Good bye Sentence4: How about any area? Sentence5: I would like a restaurant in the north part of town that serves korean food Sentence6: What is the address and price range? Sentence7: Little Seoul is at 108 Regent Street City Centre and is an expensive restaurant. Do you want the phone number? Sentence8: little seoul is in the centre and serves korean food Question: Who has spoken the sentence 3? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: I'm looking for a hotel in the moderate price range. I definitely want a hotel, not a guesthouse. Sentence2: The cambridge belfry is located at back lane, cambourne. Do you need more information or would you like to book now? Sentence3: That will be all for today. Have a great day. Goodbye. Sentence4: I also need a taxi between the two places. Sentence5: Please give me the travel time, departure location and arrival location. Sentence6: Ok i'm sorry but i'm confused. Would you like reservations? What day will it start? How many people? Sentence7: For how many days? Sentence8: What is the address and phone number? Sentence9: Of course. There are two hotels in the north and one in the centre of town. Do you have a preference? Sentence10: Their contact number is 07055906987. Is there anything else I can help you with today? Sentence11: No, there is not. Sentence12: Thank you for the reservation. I am also looking for a lovely park in north Cambridge. Sentence13: I'm sorry for the confusion. I would like a reservation for five people for four nights, beginning Friday, at the Cambridge Belfry. Sentence14: Will this start on Friday? Sentence15: i want to leave the hotel by 4:30 Sentence16: Thank you for using the Cambridge TownInfo centre. Goodbye. Sentence17: Great your booking is complete. You will be picked up in a grey BMW by 4:30 at The Cambridge Belfry and dropped off at the Milton Country Park. Sentence18: I would suggest Milton country park. Sentence19: is there one in the cheap range? Sentence20: You are all booked and your reservation number is L76Y47ZV Sentence21: Do you have their contact number? Sentence22: Is there anything to the west, preferably with a 4 star rating? Sentence23: I want to be pickup at at the hotel by 4:30. Sentence24: Yeah book for 5 people Sentence25: I'm sorry but nothing exists in the north with a 4 star rateing in the moderate price range. Could we try another area? Sentence26: Oh goodness. Can you check once again for a hotel, star 4, in the west. Cheap is fine. Sentence27: What time do you need to leave the restaurant by? Sentence28: The phone number is 01223420060. Question: Who has spoken the sentence 3? (A) User (B) System
[EX A]:
Answer: (B) System