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

[EX Q]: Sentence1: the post code is cb41er. what day would you like the reservation for? Sentence2: You're quite welcome. Thanks for contacting the Cambridge TownInfo Centre and have a great day! Sentence3: The Ashley Hotel sounds fine, can you book that for me please. Also, I need the postcode of that hotel as well. Sentence4: I'm looking for a hotel in the north side. Sentence5: Ashley Hotel and Lovell lodge are both available Sentence6: Actually, I don't need a booking. Thanks. Have a nice day. Sentence7: I have many options in the north. All are in the cheap to moderate range. Do you have any further requirements? Sentence8: I'd like a 2 star hotel with free parking. Question: Who has spoken the sentence 5? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: Yes, it has free internet and parking. Sentence2: That sounds fun! Could you tell me the phone number, area, and entrance fee for cafe jello gallery? Sentence3: Yes, I have found the Cambridge Belfry that is in the west part of town. Can I book this hotel for you? Sentence4: I am having an issue booking your hotel room for you. Sentence5: Lots of exciting things include 13 in the west area, and type of place in mind? Sentence6: Okay I was able to book you. Your booking was successful. Your Reference number is : 91SNR681 . Sentence7: No, it's a hotel. Would you like to book your stay? Sentence8: Do they have free wifi as well as parking? Sentence9: You know, the part of town doesn't so much matter, I'd really like to find a guesthouse with free wifi and parking. Sentence10: Yes please try again. Sentence11: Can I recommend the cafe jello gallery. Sentence12: the cambridge belfry is in the cheap prise range would you like a booking? Sentence13: Great. How many people in your party, and what day will you be arriving? Sentence14: I'm thinking a museum. Sentence15: Yes please. Sentence16: Hello, can you recommend a cheap hotel with free parking, please? Sentence17: Entrance is free. The phone number is 01223312112, and the area is the west. Sentence18: Is this a guesthouse? Sentence19: How about switching it to 8 people for 1 night? Sentence20: There will be 8 of us for 2 nights starting saturday Sentence21: I think that's all I need for today. Thanks. Goodbye. Sentence22: I'm sorry that doesn't seem to be available. Would you like me to double check for a guesthouse? Sentence23: Have a great trip. Goodbye. Sentence24: Are there any fun places to go ? Question: Who has spoken the sentence 5? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: Okay your booking was a success and your reference number is L1ZY1OJE, is there anything else you need today? Sentence2: Just want to make sure, that reference number is for the train, TR5465? Sentence3: I do not have the postcode, phone number, and area for the train station. May I help you with anything else? Sentence4: postcode, phone number, and area Sentence5: Whale of a Time is the only attraction I see for that area. There is no entrance fee listed, but the phone is 01954781018. Sentence6: Yes, I would like to make a booking for 8 people. Sentence7: I would be happy to help you with that! We have colleges, museums, and entertainment attractions in that area. Which would you like to visit? Sentence8: Thank you for all your help. You have a great day. Sentence9: There are a number of trains leaving from Cambridge on Monday, is there a specific destination and time you'd like to leave? Sentence10: TR5465 arrives Leicester at 17:06. Would that work for you? And the postcode for Whale of a time is cb238el. Sentence11: I'm also looking for a train that departs from cambridge and leave on Monday. Sentence12: That is correct. It departs cambridge at 15:21 and arrices in leicester at 17:06 on Monday. Sentence13: I think I'd like to visit an entertainment attraction. Do they have entrance fees? Sentence14: I'd like to arrive at Leicester by 17:45. And what was that postcode for Whale of a Time again? Sentence15: You have a wonderful day yourself! Sentence16: Hi, I'm looking for places to visit. Mainly in the western part. Question: Who has spoken the sentence 4? (A) User (B) System
[EX A]:
Answer: (A) User