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

[EX Q]: Sentence1: Thank you, and have a nice day! Sentence2: How about the Alexander bed and breakfast in the town centre? It is cheap and has free parking. Sentence3: I have a Norwich bound train leaving at 18:36, price of 17.60 pounds and traindID of TR7776, would you like me to book it? Sentence4: Yes please, for all seven of us. Sentence5: Is that a 2 star hotel? Sentence6: I'm so sorry, the Lovell doesn't have the availability you're looking for either. Would you like to try to book for a shorter stay? Sentence7: I would like a 2 star hotel. Sentence8: Can you try booking a 1 night stay? I need the reference number if that works. I also need a train leaving Cambridge after 17:45, arriving in Norwich on Wednesday. Sentence9: I have booked your stay at Lovell Lodge. Your reference number is ATYKA57C . Would you like me to buy tickets train tickets also? Sentence10: Yes. Thank you very much. Sentence11: There are 2 moderately priced 2 star hotels on the North side of town: the Ashley Hotel and the Lovell Lodge. Would you like more information on one? Sentence12: Hi I am looking for a place to stay with free parking in the cheap price range. Sentence13: What about moderately priced places with 2 stars? Sentence14: And would that be for the seven people that are staying at the hotel? Sentence15: Not at the moment. Can I have the price and train ID though? Sentence16: Does the Lovell have 3 nights available? Sentence17: Could you book 3 nights at the Ashley for 7 people, please? We'll be arriving on Tuesday. Sentence18: No, I think that's all. Thanks! Sentence19: Is there anything else I can help you with? Sentence20: The Alexander B&B is a 4 star hotel. There are no cheap hotels with 2 stars that offer free parking. Do you want to broaden your search? Sentence21: I'm sorry, it isn't available for 3 nights. Would you like to arrive on a different day or stay for less time? Sentence22: We have several locations that suit your needs, would you like a 4 star hotel? Or is there any other accommodations you'd like to narrow down the list? Question: Who has spoken the sentence 9? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: The postcode is cb41da. Is there anything else I can help you with today? Sentence2: There are 23 museums in town. Do you have a specific area you would be interested in? Sentence3: I need the post code also for the museum please. Sentence4: Acorn guest house looks available, would you like to book that? Sentence5: Their postcode is cb13ef. Is there anything else I can assist you with? Sentence6: Cambridge Artworks is in the east. They have no admission and their number is 01223902168 Sentence7: Yeah, can you have a taxi pick me up at the Acorn and take me to the Artworks, say around 24:45? Sentence8: Yes. I need a guesthouse. I should be a 4 star in the north. Parking is not important. Sentence9: I hope you enjoy your stay. Sentence10: No that's all I needed thank you! Sentence11: Not right now, but could you tell me their postcode? Sentence12: Which ever one is your favorite will do. Can I have their contact information and what is the entrance fee? Sentence13: Booking is complete. Your contact number is 07522217444. The car type will be a red tesla. Can I help you with anything else? Sentence14: I'm looking for museums in town. Can you recommend one? Question: Who has spoken the sentence 8? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: I need a four star hotel. Sentence2: Not at this time. I just need the price. Sentence3: Do you have a preferred departure/arrival time? The travel time is 51 minutes and there are multiple trains. Sentence4: There is one in the price range of cheap would you like me to book that one. Sentence5: I have many 4 star hotels. Do you have a price range or area of town in mind? Sentence6: Thank you for using our system today! Sentence7: Unfortunately I need a hotel that is 4 stars with free parking. Do you have one that is not in the moderate price range? Sentence8: That's fine, thank you. I also need help with a train leaving Cambridge and going to London kings cross. Sentence9: Yes.Let`s please try for shorter number of days. Thanks. Sentence10: Would you try for 2 nights instead? And, what is the name of the hotel? Sentence11: The price is 23.60 pounds. Is there anything else I can help you with? Sentence12: I just want to leave after 16:45 going from cambridge to london kings cross on thursday. Sentence13: Yes, that would be fine. 4 people, 4 nights, starting from tuesday. Sentence14: TR6628 leaves at 17:00 and arrives by 17:51, do you want me to book you? Sentence15: No, you've been a great help, thanks for your time. Sentence16: I am sorry about that. The hotel is in the cheap price range. Sentence17: Unfortunately that day is unavailable for that many days. Do you have an alternative? Sentence18: I was able to successfully book the Cambridge Belfry for two nights starting on Tuesday for four people. Your reference is BK6DS11E . Sentence19: The name is The Cambridge Belfry, but unfortunately they were not able to accommodate that reservation. Would you like to try it for a shorter number of days? Sentence20: Unfortunately, I don't have any hotels that fit that criteria. Would you consider a guesthouse in that range? Sentence21: Sorry, I did not want to book a room until I was sure of the price could you give that to me first? Sentence22: I would like it to be in the moderate price range and have free parking Question: Who has spoken the sentence 6? (A) User (B) System
[EX A]:
Answer: (A) User