You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
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Question: Sentence1: I'm sorry, but we just reserved your table. There is no car type. But since you ask, did you need a taxi? Sentence2: Thanks, that's all I need today. Goodbye! Sentence3: Could i please get the phone number and address? Sentence4: good day and thanks for using our services Sentence5: I only have one restaurant in the north for European food, but they have amazing food. It's called City Stop Restaurant. They are expensive but so worth it! Sentence6: book a table for 2 people at 13:15 on tuesday. Sentence7: I would like the north please. Sentence8: I am thinking I would like to try some european food while I am in town. Sentence9: Yes I need a taxi that will take me between the two places and need to arrive by 13:15. Sentence10: Okay. I have a taxi booked. It will be a yellow bmw and the contact number is 07135918917 Sentence11: The Botanical Gardens at Cambridge University are a favorite destination. The entrance fee is only 4 pounds. Sentence12: What is the car type, please thank you Sentence13: There are several to choose from, in which part of town would you like to concentrate? Sentence14: Sure, the phone number is 01223336265. The address is bateman street. Can I do anything else for you? Sentence15: Yes, I would like the information on parks that are located in the centre please. Sentence16: Your booking was successful! The table will be reserved for 15 minutes. Reference number is : ZLRYLH3O . Question: Who has spoken the sentence 13? (A) User (B) System

Answer: Answer: (B) System

Question: Sentence1: Yes I was able to do this and the reference number is J7S65ALV . Sentence2: Ok. Thank you and good bye. Sentence3: i need information of a hotel called allenbell. Sentence4: I am also looking for an entertainment place. Sentence5: Sure, great guesthouse on the east side. 4 stars but still cheap. Sentence6: Would you like the attraction in the same area as the guesthouse? Sentence7: My favorite is Nusha. It's in the south. Unfortunately, I don't have the information on their entrance fee, but I can give you their phone number, if you like. Sentence8: That would be fine. I think that's all I need. Thanks for your help! Sentence9: That doesn't really matter. What's the entrance fee and area for your favorite entertainment place? Sentence10: Could you make a reservation for 8 people for 5 nights starting Tuesday? I will also need the reference number. Question: Who has spoken the sentence 6? (A) User (B) System

Answer: Answer: (A) User

Question: Sentence1: No, that is all I need. Thank you for your help! Sentence2: I am looking for a vegetarian restaurant near South Cambridge, or a restaurant that has a variety of vegetarian dishes. Sentence3: What is the area that is in? Sentence4: Free parking isn't that expensive to me, are there any others or just the University Arms? Sentence5: You are welcome! Have a wonderful day! Goodbye! Sentence6: How many nights will you be staying? Sentence7: Please book the Marriott for 4 please. Sentence8: I'm sorry, I'm experiencing a system error. Could you please restate your request? Sentence9: Yes, I also need a place to stay I need a hotel that is expensive. Sentence10: I have 5 hotels in total to choose from. We have a Marriott in the expensive price range in Cambridge if you are interested. Sentence11: University arms hotel is also in the centre area in the expensive price range. Free parking and internet. Would you like to book a room? Sentence12: Sure, its on 2 Norfold Street. Anything else? Sentence13: It is in the centre of the city. Can I help you with anything else? Sentence14: Does it have internet? Sentence15: Yes, the Huntingdon Marriott has internet, would you like more information on this hotel? Sentence16: Uh, can you tell me where the Man on the Moon exhibit is? Sentence17: the huntingdon Marriott is a 4 star hotel on the west side. It is in Hinchinbrook business park and the phone number is 01480446000. Can I help with anything else? Sentence18: I'm not sure yet. I actually just need the info. Sorry. Sentence19: Is it in the centre? If it is, I would like to book it. Sentence20: No it is in the west. Do you wanna book it? Would you like to try university arms hotel instead, that is also in the centre. Question: Who has spoken the sentence 15? (A) User (B) System

Answer:
Answer: (B) System