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

[EX Q]: Sentence1: It's located in southern Cambridge at cambridge leisure park, clifton way. It's phone number is 00872208000. Do you need anything else? Sentence2: Thank you, that is all I need. Sentence3: thanks alot and is there parking for two cars? Sentence4: What type of food would you like? Sentence5: Actually never mind. I would actually like just find a place to stay in the cheap price range in the west. Sentence6: Yes, can you help me find a place to eat? Sentence7: Sure, I can help you with that. Was there a particular type of cuisine you were interested in? Sentence8: Fantastic, enjoy your trip! Sentence9: I certainly hope so! We have a lot of interesting places to see in Cambridge. Is there something specific you're looking for? Sentence10: There is a place I want to see, can you help me? Sentence11: The hotel I'm looking for should have a star of 4, in the cheap range, somewhere in the West. It'll be for 3 people and 4 nights starting Wednesday. Sentence12: Okay. We have you booked at the Cambridge Belfry. The reference number is Y8Y2HVXE . Sentence13: I am looking for a attraction called cineworld cinema. Sentence14: I'm afraid I can only see that they have parking available. If you need to park two cars, I would phone them on 01954714600. Can I help with anything else? Question: Who has spoken the sentence 1? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: It does not matter, I just need one available for 7 people at 18:15 on thursday Sentence2: I'm sorry, nothing is coming up for that particular type of restaurant. Is there any other specifics you may like? Sentence3: The reference number is DVDLH9NK . Is there anything else I can help you with? Sentence4: Unfortunately I could not find any guesthouses meeting those requirements. Sentence5: How many stars is Cityroomz? Sentence6: Before I can book your taxi, what time are you wanting to leave or arrive by? Sentence7: Fantastic. Enjoy your trip! Sentence8: Not yet. I would like you to book a taxi for me between my hotel and restaurant. I will need the car type and contact number. Sentence9: It has a zero star rating, is this ok? Sentence10: I also need the reference number please. Sentence11: I just want to be sure it arrives by the booked time at the restaurant. Sentence12: Cityroomz is the only place that matches your criteria. Sentence13: That is fine. Do they have internet? Sentence14: I have made a reservation at restaurant alimentum for you. Your table will be reserved for 15 minutes. The address is 152 - 154 Hills Road. Sentence15: How about one that serves modern european food? Sentence16: Thank you very much for your help! That was everything I needed. Sentence17: How about a hotel type? Sentence18: There are 3 restaurants serving modern european food, would you prefer one on the south side or town centre? Sentence19: Yes, Cityroomz has internet. Would you like to book it? Sentence20: Booked. Your car type is white skoda and contact number is 07075801794 Sentence21: Can you find me restaurant with moderate prices that serves north indian cuisine? Sentence22: Yes, I also need a guesthouse hotel with moderate prices in the centre. I don't need free parking. Question: Who has spoken the sentence 15? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: If you think of anything else you need don't hesitate to contact us, we're always happy to help. Sentence2: Train TR5902 will suit your needs. May I book it for you? Sentence3: where are you going to? and what time would you like to travel? Sentence4: Yes please, I need to book it for 6 people. Sentence5: I have 3 entries available. 2 in the west and 1 in the centre. Do you have a price in mind? Two are expensive and one is cheap Sentence6: Yes, please for 6 people starting tuesday night. Sentence7: I'm looking for a 4 star hotel in the cheap price range, the place should have free parking. Sentence8: how many days will you be staying? Sentence9: I am going to Peterborough and it should arrive by 17:00 on Tuesday. Sentence10: I would prefer the cheaper one, please. What's it called? Sentence11: Yes they have both free wifi and parking. It's located at back lane, cambourne in the west. Would you like me to book you a room? Sentence12: The cambridge belfry is located on the west side and is super cheap. Sentence13: Booking was successful, the total fee is 99 GBP payable at the station . Reference number is : 9YJM47UH . Sentence14: No thanks. That is all I needed. Sentence15: Thank you I also need help with a hotel. I am looking for a 4 star hotel. What you got? Sentence16: Hi there. I would like to find a train leaving Cambridge. Sentence17: No problem. Their address is back lane, cambourne. Is there anything else I can do for you today? Sentence18: They sound like just what I need. Could you verify whether they have free parking, and give me their address? Sentence19: I'm sorry, I changed my mind. I don't need a room booked. I just need their address. Sentence20: The cambridge belfry is available, would you like to book there? Question: Who has spoken the sentence 2? (A) User (B) System
[EX A]:
Answer: (A) User