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

[Q]: Sentence1: Please feel free to contact us again for further assistance. Good-bye. Sentence2: Great news! Your booking was successful and I have a reference number for you. It is PL4JEQ9A . Sentence3: Yes please I need a booking for 4 people and 2 nights starting from friday. Sentence4: How about a different hotel in the same price range? Sentence5: Can you find me a place to say in the centre that includes free wifi? Sentence6: I have the Cityroomz hotel which is in the moderate range with internet and no parking. Would you like to book this hotel? Sentence7: Are there any in the moderate price range? Sentence8: Thank you for your help. Sentence9: I can recommend the Alexander Bed and Breakfast. It is a guesthouse in the cheap price range. Sentence10: How about the el shaddai, they have free internet and free parking? Sentence11: Thank you very much. I will. Sentence12: You are very welcome. Please enjoy your stay. Sentence13: That on is not open then, shall I try another? Sentence14: That will be fine. Question: Who has spoken the sentence 5? (A) User (B) System
[A]: Answer: (B) System


[Q]: Sentence1: No, but I would like to find a cheap priced south african restaurant. Sentence2: I'm sorry, but we don't have and South African restaurants in the area. Is there a different type of food I can help you find? Sentence3: I would say let's look for an attraction first. Can you recommend something to do in the south part of town? Sentence4: I will go with whatever you recommend, I just need the attraction type and postcode. Sentence5: Hi, I am looking forward to trying some of your local restaurants. I do need help with some other places to go in town while I am there though. Sentence6: There are several nice parks in the area as well as theaters and museums. Sentence7: The byard art museum postal code is cb21sj. Can i help you get transportation to and from the museum? Sentence8: Try Portuguese then. Sentence9: Thanks so much for putting up with me! You've been great! Sentence10: 3 people will be dining. Please give me a reference number once you finish the reservation Sentence11: I would rather be in the south area. Sentence12: What is your food type preference? Sentence13: There are two results. Both are cheap. Do you prefer the south or centre? Sentence14: I have finished booking it for Thursday at 12:15 for 3 people at Nando, your reference number is TDQZGM38 . Do you need anything else? Sentence15: Can you book a table for me there on Thursday at 12:15? Sentence16: The only option is nandos. Sentence17: You are welcome enjoy Sentence18: How many people are in your party? Question: Who has spoken the sentence 15? (A) User (B) System
[A]: Answer: (B) System


[Q]: Sentence1: I can take care of that for you. Would you like to be picked up at the college? And at what time? Sentence2: The number is 01223210353. I can make that booking for you, I would just need to know and arrival date and for how many people and length of your stay. Sentence3: There is a cheap guesthouse named Allenbell on 517a coldham lane if you are interested. Sentence4: I also need a place to stay. I am thinking a guesthouse in the east part of town. Sentence5: Thanks. I also want to book a taxi to commute between the college and the hotel. Sentence6: I want to leave the hotel at 15:15 to go to the college. Sentence7: Can you confirm if this hotel is 4 star? If so, I will need to book it for 1 person for five nights starting on wednesday. Sentence8: And just to clarify, what sort of attraction is it? I assume it's a college but sometimes things are named oddly, you understand. Sentence9: I was able to book that, your reference is 4B5YCEFU . Sentence10: Yes, downing college is a college. Can I do anything else for you today? Sentence11: Can you try for 2 nights instead? Sentence12: No, I think that takes care of it. Thank you. Sentence13: Sure, it is located in the centre area, on Regent Street, postcode cb21dq, their phone number is 01223334860. Sentence14: It is four stars but unfortunately I cannot book it. Would you like to change the date? Sentence15: Thank You, have a good stay. Goodbye. Sentence16: I have confirmed your taxi, a black bmw will be picking you up. Their contact number is 07830542895. Can I help with anything else? Sentence17: That sounds great. Can I have the number? Sentence18: I am looking for Downing College. Can you give me information on it? Question: Who has spoken the sentence 10? (A) User (B) System
[A]:
Answer: (A) User