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

[Q]: Sentence1: I am looking for Mediterranean food in the center of the city. Sentence2: I show 3 available. 2 are in the expensive range and 1 is cheap. May I book a table for you? Sentence3: Thanks for calling. You have a great day! Sentence4: I have booked you at the Shiraz Restaurant for 7 people Saturday at 15:45. Your table will be reserved for 15 minutes. Sentence5: I'd like the expensive range and I'd like to book a table for 7 people on Saturday at 15:45. Sentence6: Great. Thanks so much! Sentence7: Thank you so much. That is all I need today. Have a great evening. Sentence8: Sure. Your reference number is MSV3UPS2 . You will likely need it. Question: Who has spoken the sentence 4? (A) User (B) System
[A]: Answer: (A) User

[Q]: Sentence1: Thanks for handling the restaurant. I will have time to check out the town. Do you have multiple sports in the same area as the restaurant? Sentence2: I need a place to dine that is expensive in the centre. Sentence3: No, that's all I needed. Thanks for your help! Sentence4: Okay, I recommend midsummer house restaurant in Midsummer Common. Would you like a reservation? Sentence5: 01223334860 is the phone number, and entrance is free. Anything else today? Sentence6: Okay, that sounds nice. Can you give me their phone number and tell me their entrance fee? Sentence7: I can help with that. Did you have a price range in mind? Sentence8: Ok, you're all set, the table will be reserved for 15 minutes and your reference number is : 48QP48K1 . Can I help you with anything else? Sentence9: Yes I would love that. I need to make the reservation for 8 people for 16:15 on Thursday. Sentence10: Why don't you try looking for a college in that area instead please Sentence11: No, there aren't any multiple sports places in the centre. Would you like me to check a different part of town? Sentence12: There are 13 colleges in the centre. I recommend downing college. Sentence13: You have a wonderful day and a great trip. Sentence14: Expensive, please. British food. Question: Who has spoken the sentence 10? (A) User (B) System
[A]: Answer: (A) User

[Q]: Sentence1: That is all. Thank you. Sentence2: Is there anything else in the expensive range in the north area of town? Sentence3: My pleasure. Goodbye. Sentence4: What is the phone number? Sentence5: golden wok is in the moderate price range and is in the north area of town. Sentence6: What is the phone number of that one please? Sentence7: I want to find a moderately priced restaurant in the north part of town. What is the phone number? Sentence8: the phone number of it is 01223 351880. Sentence9: Yes, there is an expensive French restaurant called restaurant two two . Sentence10: Restaurant Two Two's phone number is 01223 351880. How else may I assist you? Question: Who has spoken the sentence 6? (A) User (B) System
[A]:
Answer: (A) User