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

[EX Q]: Sentence1: I have your taxi booked. Look for a blue volkswagen, contact number 07655267463. Is there anything else I can help you with? Sentence2: I need to book a place to stay with a star of 4. I don't need free parking. Sentence3: Can you please provide me with the address, telephone number and the cost of admission. Sentence4: Thank you. Enjoy your stay Sentence5: I now need a taxi to get to the church from the hotel. I would like to leave the hotel by 15:45. Can you book that for me? Sentence6: I don't care about location, just would like a moderate price with 4 stars please. Sentence7: We have 44 attractions in the centre of town Broughton House Gallery is a museum we have available. Sentence8: We have 11 in the moderate range. They are all a guesthouse accommodation. Would you like one of these? Sentence9: I need one with free wi-fi. Sentence10: I have you booked. The reference number is WPGQ4ADJ . Sentence11: After that I'm also going to need the reference number. Sentence12: OK, now can you tell me about some of the attractions in the center of town? Sentence13: I would also need to book it for 4 nights. Sentence14: No, that is all. Thanks so much. Bye. Sentence15: One person, and I'd like to arrive on Tuesday. Sentence16: We have over 20 fine hotels. Do you have any preferences of cost or location? Sentence17: How long do you want to stay? Sentence18: Can i book one on tuesday? Sentence19: OK, let me see what I can do. Sentence20: How about All Saint's Church at 01223452587 in the centre? It's free. Sentence21: before I look for that, could you let me know how many people are staying and what day you'd like to arrive? Sentence22: I have two: a and b guesthouse in the east and avalon in the north. Would one of these work for you? Question: Who has spoken the sentence 18? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: Thank you for using this system Sentence2: There are several cheap restaurants located in the centre part of town. Sentence3: I am looking for a cheap restaurant. Sentence4: Yes, La Raza serves Spanish food. Would you like their phone number? Sentence5: Do any serve spanish food? Sentence6: La Raza is located at 4-6 Rose Crescent, their postcode is C.B 2, 3 L.L Sentence7: Thank you, goodbye. Sentence8: No, I would like the address and the post code please. Question: Who has spoken the sentence 6? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: You're quite welcome. Have a good day! Sentence2: Do you have any that would arrive at 17:45, leaving tuesday instead? Sentence3: the next train from kings lynn is Friday 5:11 to Cambridge Sentence4: Yes, there are 12 trains that fit that criteria. Do you have a desired departure time? Sentence5: I am looking for some type of entertainment. Sentence6: Sure, what are you interested in seeing? Sentence7: Can you help me find a train from kings lynn? Sentence8: All booked! Your train ID is TR8177 and the reference number is ZDTM4B8N . You will be arriving at 16:58. Sentence9: Thank you. I'm also looking for places to go in town. can you help me with that? Sentence10: Whatever gets me there as close to 17:45 as possible. Can you book it for 7 people please? Reference number and train ID would also be lovely. Sentence11: Funky fun house is located in the east side of town, address is 8 mercers row, mercers row industrial estate postcode cb58hy, phone 01223304705. Is there anything else needed? Sentence12: Thank you so much. That is all. Sentence13: There's the Funky Fun House on the east side of town, does that sound ok? Sentence14: That sounds great, may I have the postcode, phone number and area of town it is in? Question: Who has spoken the sentence 1? (A) User (B) System
[EX A]:
Answer: (B) System