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

Example Input: Sentence1: No, that's all I needed. Thanks for your help today! Sentence2: Can you search for a guesthouse that includes free wifi? Sentence3: The Avalon doesn't have room for 5 nights starting Monday. How about a different day or a shorter stay? Sentence4: That sounds perfect. Can I book it for 5 nights starting on Monday for 3 people? Sentence5: No, that doesn't matter, but I'd like something in the moderate price range. Sentence6: Avalon is available for four nights starting on Monday. Your reference number is 59GZA6ME . Can I do anything else for you? Sentence7: There are 14 options. How about the Avalon? It has 4 stars and free parking and wifi. Sentence8: You are welcome. Thank you for calling the Cambridge TownInfo Centre. Goodbye. Sentence9: Let's try 4 nights. Sentence10: We have 23 such places. Any preference on area? Question: Who has spoken the sentence 3? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: Actually, I'm all set. Thank you! Bye! Sentence2: OK, great. will it be the same two people as on the train and starting on Monday? or do you have different needs for lodging? Sentence3: What is the price for that trip? Sentence4: Could you clarify if you need the reservation for 1 or 2 people please? Sentence5: Certainly, where will you be departing from? Sentence6: It look like the TR0532 is what you are looking for departing Bishops Stortford at 7:29 and arriving in Cambridge at 8:07. Would you like to book? Sentence7: The postcode for Worth House is cb41da and yes, it has internet! Sentence8: I would prefer the hotel be in the north part of town. Sentence9: I don't need to book today, thanks. Can you get me the postcode of one of them? Oh, and please make sure the one you choose has internet! Sentence10: Okay you sure you will not require a booking? Sentence11: I need a cheap hotel with free parking. Sentence12: The fare is 10.10 GBP per ticket. Sentence13: Okay let me see if I can book that for you. Sentence14: I need reservations for 2. Sentence15: Hi I am looking for a train to arrive in Cambridge by 08:15. Sentence16: Nope, same people. Sentence17: I've booked your tickets for the 7:29 train from Bishops Stortford, reference ZHT6R80S . Can you give me more information about the type of hotel you'd like? Sentence18: 1 person 5 nights please Sentence19: There are 10 total hotels, do you have a preference for area? Sentence20: I'd be happy to book that for you, what day will you be arriving on, and for how many nights? Sentence21: I'll be leaving from Bishops Stortford on Monday. Sentence22: I will go ahead an book at the Worth House. Sentence23: City centre north b and b and Worth house are both guesthouses and located in the north. Would you like me to book one for you? Sentence24: I need to make a booking for 2 people and can you find me a place to stay in the north? Question: Who has spoken the sentence 17? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: Can you book it for me. From Thursday, for 2 nights and 3 people. Sentence2: Yes please. I need to book it for 3 people. Once booked can I please have the reference number? Sentence3: Alright got your tickets booked, the total fee is 24.24 GBP payable at the station. Your reference number is: O14QEE79 . Anything else I can help with? Sentence4: I definitely want a 4-star hotel, not a guesthouse. I don't care about parking, but I do need free wifi. Sentence5: how about huntingdon hotel in the west? Sentence6: That sounds great. Can you give me some information about it? Sentence7: I'm looking for a train departing on saturday from cambridge. Sentence8: I'm glad we were able to help you. Goodbye! Sentence9: Absolutely! Your stay has been booked, and the reference number is 97Z4GAQ7 . Is there anything else I can help you with? Sentence10: Getting out of cambridge for awhile going to stansted airport and would like to leave anytime after 12:30 please Sentence11: TR8476 will cost you 8.08 pounds. can i book it for you? Sentence12: Yes, we're also looking for a hotel to stay at when we're in town. Sentence13: I can help you with that. What amenities are you looking for? Sentence14: No, thank you. Sentence15: Absolutely. It's an expensive 4 star hotel that offers free wifi and free parking. The hotel is located at kingfisher way, hinchinbrook business park, huntingdon. Can I book it for you? Sentence16: Escaping for the weekend, huh? Where are you headed? Question: Who has spoken the sentence 10? (A) User (B) System
Example Output:
Answer: (A) User