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

Sentence1: Yes I was able to locate 4. Can I book a table for you? Sentence2: Thanks so much! Sentence3: Is there anything else that I can book for you or assist you with for your upcoming trip? Sentence4: Are you looking for a Danish restaurant? Sentence5: Yes please in the same area and price range. Sentence6: For four, Thursday, 11:45. Sentence7: Booking unsuccessful. Would you like to try another restaurant? Sentence8: Thank you have a good day. Sentence9: Yes please. In the centre of town. Sentence10: Yes please,for tonight at 9 PM if possible. Sentence11: I will make a booking for you at hk fusion, but I do need to know what day and time you prefer, and for how many people. Sentence12: I am looking for an expensive Danish place. Sentence13: Is there an expensive chinese restaurant in the centre? Sentence14: I am sorry I have no listings for that type of restaurant, is there any other type of food you would like? Sentence15: Booked at ugly duckling. Reference number: EQFGNMFY . Table will be held for 15 minutes. Sentence16: That was all I needed today thank you! Question: Who has spoken the sentence 10? (A) User (B) System
Answer: (A) User

Sentence1: Booked car type : white toyota Contact number : 07264671188 All set. What else can I help with today? Sentence2: looking for places to go in town and be in the South Sentence3: Yes, please book it. Sentence4: Thank you. I'd also like to book a taxi. I need to leave the hotel by 10:15. Sentence5: When will you start your stay? Sentence6: What's the entrance fee? Sentence7: What type of attraction are you looking for? Sentence8: The attraction should be in the south. Sentence9: I think I got everything I need thanks to you! Sentence10: Unfortunately, Nusha has not provided any information on entrance fees. I can seek other options, if you'd like. Sentence11: I need it for Thursday night, for four nights, for 4 people. I'll also need a taxi by 10:15. I need the car type and contact number please. Sentence12: Booking was successful. Reference number is : Y3CFU8WN . Sentence13: There is a hotel called Cityroomz in centre located at Sleeperz Hotel, station road. Would you like me to book it for you? Sentence14: how about nusha? it's located in the south. Sentence15: then find me a particular hotel called cityroomz Sentence16: Well, you are very welcome. I hope you have a great time! Question: Who has spoken the sentence 13? (A) User (B) System
Answer: (B) System

Sentence1: Sounds great, can I have the phone number, entrance fee, and the postcode please? Sentence2: I'm also looking for a place to eat in the same area. Sentence3: how about 14:45? Sentence4: Yes 14:45 works! You table will be reserved for 15 minutes. Your reference number is DG9TSIVA . Is there anything else I can help you with? Sentence5: There are five options. Great Saint Mary's church is a great option. Sentence6: Unfortunately that's already been booked. Would you like to try another time? Sentence7: That's not necessary. I want to book a table for 1 person at 15:45 on Saturday. Sentence8: Could you find me something moderately priced, please? I'm not picky about what it is. Sentence9: Great St Mary's Church entrance fee is 2 pounds, their phone number is 01223350914, and the post code is cb23pq. Sentence10: There are 69 restaurants in the city centre. Is there a type of food or price range you would prefer? Sentence11: Hi, I'm looking for something to do in the centre of cambridge that would be entertainment based. Sentence12: The yipppee noodle bar serves Asian food in the city centre and is moderately priced. Would you like the address and phone number? Sentence13: I'm sorry, I have no entertainment listings in the city centre. Would you like to try another area? Sentence14: No that's it, you've been great, thank you! Sentence15: I'm glad I was able to help. Please call back if you have any more questions! Sentence16: Could you find some interesting architecture then? Question: Who has spoken the sentence 9? (A) User (B) System

Answer: (B) System