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. I changed my mind. I don't want a guesthouse. Are there any hotels with 2 stars? Sentence2: Great that was all I needed today, thank you. Sentence3: Is there a particular area you would like to stay in? Sentence4: There isn't a guesthouse with 2 stars and free internet available. Is there another type of hotel I can look up for you? Sentence5: Great Glad I could be of help to you. Sentence6: I have you booked in the Ashley hotel. Your reference number is CW6YMT0B . Is there anything else I can do for you today? Sentence7: No, just any 2-star hotel with free wifi will do. Sentence8: Hi, I need a guest house please. Sentence9: Do you have a specific location you want to be? Sentence10: No, but I need free wifi and I would like a 2 star guesthouse please. Sentence11: I have 3 guesthouses all in the moderate price range. Would you like me to choose one for you? Sentence12: I found 3 for you all in the expensive price range. Can you please give me the details so that I may book it for you? Sentence13: Yes, how about a guesthouse with 3 stars and free wifi instead? Sentence14: I would like it for 6 people for 2 nights starting on Wednesday. Question: Who has spoken the sentence 11? (A) User (B) System

A: Answer: (B) System
****
Q: Sentence1: I have information for the Parkside Police Station, is this close to your location? Sentence2: You're welcome. The police will help you immediately. Goodbye. Sentence3: Thank you for your help Sentence4: Please put me in touch with the local police, I was just robbed. Sentence5: The phone number is 01223358966 and the post code is CB11JG. Sentence6: I don't know, could you just give me the postcode and phone? Question: Who has spoken the sentence 3? (A) User (B) System

A: Answer: (B) System
****
Q: Sentence1: There are 6 four-star guesthouses in the east. Do you need free parking or Internet? Sentence2: You're welcome. Have a great day! Sentence3: There are 5 options available to you meeting that critera. Are you looking for a specific price range? Sentence4: Certainly! We have numbers of hotels. Any particular area or price range are you looking for? Sentence5: I do not have that information at the moment. Sentence6: Is there anything else I can assist you with today? Sentence7: Ok sorry I will call back when I have that information. Sentence8: TR5941 is good. Thank you for your help. Sentence9: TR5941 leaves at 21:00 and arrives at 21:51. TR6595 leaves at 23:00 and arrives by 23:51. Which do you prefer? Sentence10: Unfortunately I will need this information in order to book the room. Would like to call back at another time when you have that information? Sentence11: Excellent. That's all I will need. Sentence12: Yes can I have the address and hotel type for one of hotels? I'd take whichever one that you recommend. Sentence13: Great. Glad to help. Have a wonderful day! Sentence14: There are more than 2800 trains that leave on Tuesday and arrive before 20:00. What are your departure and destination points? Sentence15: I need a train after 20:00 on Tuesday, please. Sentence16: I have chosen the Warkworth House for you! It has parking along with internet capabilities. The address is 138 Perne Road. Sentence17: Wait. I also need a place to stay. Sentence18: Something moderately priced would be best. Sentence19: Of course. I'd like to leave from Cambridge and head to London King's Cross. Sentence20: I have 2 that I can try booking for you. How many in your party and how long is your stay going to be? Sentence21: I would like free parking. Sentence22: I prefer something in the east. And I only like to stay at 4-star rated places. Question: Who has spoken the sentence 20? (A) User (B) System

A:
Answer: (A) User
****