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

Input: Consider Input: Sentence1: Then you are all set? Sentence2: I booked you a black volvo. The driver can be reached at 07410117478. Is there anything else I can help you with today? Sentence3: I'm sorry, I clearly wasn't paying attention. Yes that is all I need. Sentence4: Booking was successful. The table will be reserved for 15 minutes. Reference number is : 0IJIWWQ9 . What else can I help you with? Sentence5: We have five hotels that meet that criteria, are you looking for a specific part of town? Sentence6: Yes. Have a great day. Sentence7: Anything in the centre would be fine, whatever you recommend. Sentence8: Regretfully, I don't have a listing for Venetian cuisine. Do you have a second choice? Sentence9: I'm looking for a place that has 3 stars and free parking. Sentence10: There are over a hundred restaurants to chose from do you have a price range? Sentence11: Does that one have free internet as well? If so it will work great for me. Sentence12: Yes I can. What type of place to stay would you like? What area of town? Sentence13: Yes the hamilton lodge is 3 stars moderately priced and offers free wifi and parking. Sentence14: There are 4 results. restaurant one seven, the oak bistro, the copper kettle, and cotto. Would you like more information on any of those? Sentence15: Sadly, I don't have access to that information. The Oak Bistro might be a good choice. Their phone number is 01223323361 if you'd like to call them Sentence16: Thanks, I need a taxi to commute between the two places. Sentence17: I am not looking for a specific area, but I would like for it to be in the moderate price range, please. Sentence18: Definitely something moderately priced. If you can't find Venetian, how about British? Sentence19: Thank you for calling. Sentence20: I'm looking for a restaurant that serves venetian food. Sentence21: Yes, please. Find out which of the four restaurants have vegan options, please? Sentence22: How about the hamilton lodge it's located in the north. Sentence23: I am traveling between the two places discussed, I need to reach the restaurant by the booked time. Sentence24: I can help you book a taxi but first I need some information - where are you leaving from and what's the destination. Also what time do you want to leave? Sentence25: I also need a place to stay. Can you help with that? Sentence26: Okay, well, let's go ahead and book a table for one at 11:30 on Tuesday. Question: Who has spoken the sentence 18? (A) User (B) System

Output: Answer: (A) User


Input: Consider Input: Sentence1: We have nine expensive dining establishments on the west side. Cuisines offered are Thai, Indian, European, and British. Do you have a preference? Sentence2: Thank you. Can you please give me the reference number? Sentence3: The reference number is 5WHDPGHW .. Is there anything else I can assist you with? Sentence4: Okay I booked a table for 4 at 15:00 on Saturday at the Graffiti, an expensive British restaurant in the west area of town. Sentence5: I am interested at eating at an expensive place in the west part of town. Sentence6: No that will be all. Thank you so much for all of your help! Sentence7: Excellent. Have a good rest of your day! Sentence8: No I don't have a preference. I want to book for four people at 15:00 on Saturday. Question: Who has spoken the sentence 5? (A) User (B) System

Output: Answer: (B) System


Input: Consider Input: Sentence1: Your room is now booked at The Worth House and I will send you the reference number. Thank you. Good bye. Sentence2: The Worth House meets your needs. Would you like me to book a room for you there? Sentence3: I would like it to be in the north with a 4 star rating and free parking please. Sentence4: Yes, please and can you send me a reference number. Thank you. Sentence5: We have many, do you want a specific side of town? Sentence6: Can you help me find a cheap hotel? Question: Who has spoken the sentence 4? (A) User (B) System


Output: Answer: (A) User