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

[Q]: Sentence1: I'm sorry the full address isn't listed would you like there postcode and phone number? Sentence2: They are on Wheeler street and phone is 01223357851 Sentence3: No but I also need a hotel called university arms hotel. Sentence4: It is a theatre located in the centre on wheeler street. Sentence5: Can you provide their full address please? Sentence6: I'd like to visit an attraction called the Cambridge Corn Exchange. What can you tell me about it? Sentence7: I was able to find university arms hotel located at regent street. Would you like me to book a room for you? Sentence8: Before we do that, what type of attraction is the Cambridge Corn Exchange? I don't know too much about it. Question: Who has spoken the sentence 6? (A) User (B) System
[A]: Answer: (A) User


[Q]: Sentence1: You're welcome, glad I could help. Sentence2: I personally like Parkside Pools. It's in the center of town, on Gonville Place. Sentence3: Any area is fine. Which of the 4 swimming pools do you suggest? Sentence4: It is cb11ly. Is there anything else I can help you with? Sentence5: Where will you be departing from? Sentence6: Thanks. That was all I needed. Goodbye. Sentence7: I am departing from Cambridge. Sentence8: I am looking for information on places to go in Cambridge. Can you help with that? Sentence9: My destination is london kings cross Sentence10: Can I get the postcode as well? Sentence11: I can help with that. Is there a particular area you're interested in? Sentence12: Yes, there are 4 swimming pools that match those requirements. Is there a particular area you would like to go to? Sentence13: There are 278 trains that meet that criteria. Would you like to narrow down your options by departure site, destination, or arrival time? Sentence14: I have made that reservation and your reference number is 1702SDBO . Sentence15: TR1502 arrives in london kings cross friday at 11:51. Would you like me to book you any seats? Sentence16: I also need a train leaving after 11:00 on friday Sentence17: What I'd really like is to find a swimmingpool. Sentence18: Yes book for 8 people and I need a reference number Question: Who has spoken the sentence 13? (A) User (B) System
[A]: Answer: (B) System


[Q]: Sentence1: I am wondering if you have any restaurants in town that serve eriterean food. Sentence2: Sure I can help you. What kind of information were you looking for? Sentence3: Yes, there are three restaurants that serves Mediterranean food. Sentence4: I have booked two seats on TR3888 arriving in Cambridge at 08:23. Reference number is : 5DPBKIY1 . Can I be of further assistance? Sentence5: Okay! From where? Sentence6: I am looking for information in Cambridge. Sentence7: What time does it arrive? Sentence8: Monday. As I said before, 2 tickets for Monday. Sentence9: it will arrive by 08:23. is that fine with you? Sentence10: excellent, have a great day! Sentence11: Monday and I'll need to arrive by 08:30 in Cambridge. Sentence12: Yes please do. Sentence13: I also need help finding a train going to Cambridge Sentence14: Great, what day and time do you prefer? Sentence15: The first train leaves at 5:40. Sentence16: Umm, actually I had asked about Eriterean food, not Mediterranean. Sentence17: Booking was successful. The table will be reserved for 15 minutes. Reference number is : K8YAC7SK . Can I help with anything else? Sentence18: I like the gardenia. Need me to make a reservation? Sentence19: I need to leave from birmingham new street Sentence20: what day will you be travavelling Sentence21: we got none that serves that kind of food. will you change the kind of food? Sentence22: Okay I have three restaurants serving this. Would you like me to choose one for you? Sentence23: Yes for 2 people on monday at 12:15 please. Sentence24: Yes that will work. I need 2 tickets for monday please. Sentence25: No, that will be all for today. Sentence26: No, I really want Mediterranean food. Question: Who has spoken the sentence 21? (A) User (B) System
[A]:
Answer: (B) System