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 am sorry. i have double checked and still do not find anything matching your criteria. would you like a different star rating? Sentence2: I can help with that. What kind of price range do you have in mind? Sentence3: there are a variety of good things in the north it depends on what you want i will find whatever you request Sentence4: There doesn't appear to be a 4 star hotel with wifi in the north. Can I interest you in a lower star rating? Sentence5: i need a hotel with wifi in the north part of town Sentence6: Perhaps there is a guestroom? Sentence7: No but would you like to try another location ? Sentence8: No, the hotel needs to have a 4 star rating. Can you please check your system again? Thanks Sentence9: I am open as far as price range, but I would love a 4 star place. Sentence10: No I need the north. Is there anything else available in the north? Question: Who has spoken the sentence 3? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: Let us know if you need anything else. Sentence2: Certainly, the address for Cityroomz is sleeperz hotel, station road postcode cb12tz. Is there anything else I can help you with? Sentence3: Great. Could you please tell me the entrance fee? Sentence4: im glad to have satisfied you Sentence5: I have 1 hotel and a 2 guesthouses available. Do you have a preference on the area or if it is a hotel or guesthouse? Sentence6: Thanks again. That's all I needed. Sentence7: There is no entrance fee. Sentence8: Cityroomz meets that description. Would you like to book it? Sentence9: May I please have the address and postcode for Cityroomz? Sentence10: Are there any nearby museums? Sentence11: The cambridge contemporary art museum is nearby. Sentence12: Wonderful! That is all I needed. Thank you so much! Sentence13: I would prefer a hotel that is in the centre of town and moderately priced if that helps narrow it down. Sentence14: Hi, I'm looking for a hotel, a 0 star hotel is fine as long as it includes free wifi. Question: Who has spoken the sentence 2? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: Have a good day and enjoy the museum! Sentence2: Please book two seats on that train, and send me the reference number. Sentence3: I would like to go to stansted airport on wednesday please Sentence4: That is everything I needed for now. Thank you! Sentence5: The cambridge contemporary art museum is free and located in the centre. Sentence6: What is your destination and when would you like to leave? Sentence7: I'm looking for a train departing from Cambridge. Sentence8: Awesome. I'm also looking for places to go in the centre of town. Any suggestions? Sentence9: Booked! Your reference number is 89Q51FJW . The fee is 20.2 GBP and paid at the station. Sentence10: Thanks, that's very helpful. Oh, right, what postcode is it in? Sentence11: There is a train departing from Cambridge to Stansted Airport on Wednesday at 11:40. Sentence12: We have many trains that leave after 11:00. Where would you like to go and on what day? Sentence13: The postcode for the Cambridge Contemporary Art Museum is cb21su. Is there anything else I can assist you with today? Sentence14: I'm leaving cambridge and would like to leave after 11:00. Question: Who has spoken the sentence 13? (A) User (B) System
[EX A]:
Answer: (B) System