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

Ex Input:
Sentence1: I would actually like to book it for 8 people, not 3. Sentence2: Could you reserve the one in the centre of town for 3 nights starting Monday? There will be 3 of us. Sentence3: You're welcome. Glad to help! bye bye! Sentence4: Sure no problem. So the hotel is huntingdon marriott hotel and your reference number for the booking is 34BAQ2WK . Is there anything else I can help? Sentence5: I am looking for a hotel in the expensive price range. Sentence6: Unfortunately, I wasn't able to book you for the day and time you wanted. Would another day or time be alright? Sentence7: No, it doesn't matter. I would like a 4 star hotel with free parking though. Sentence8: That's great. I'm all set , thank you! Sentence9: There are 5 expensive hotels available. Did you have a preference as to area of the hotel? Sentence10: There are two, one in the west and one the centre of town. Sentence11: I couldn't book that one either. Would you like to change your criteria? Sentence12: Okay, could you try the other one, please? Question: Who has spoken the sentence 1? (A) User (B) System

Ex Output:
Answer: (B) System

Ex Input:
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 Output:
Answer: (A) User

Ex Input:
Sentence1: Thanh binh is a vietnamese restaurant in the west part of town. Would you like their location? Sentence2: Thank you! Sentence3: I am looking for a restaurant that serves Vietnamese food. I don't care about the price range. Sentence4: its address is 17 Magdalene Street City Centre and the phone number is 01223 362456 . Sentence5: Thank you, goodbye. Sentence6: Yes, what is their address and phone number? Question: Who has spoken the sentence 5? (A) User (B) System

Ex Output:
Answer: (B) System