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'm looking for an expensive restaurant in the center of town. Sentence2: Certainly. When would you like your taxi to depart? Sentence3: Is there any Turkish cuisine? If so I need the postcode and the address. Sentence4: No, that will be all, thank you! Sentence5: I need to arrive at Cambridge Contemporary Art by 19:15 please. Sentence6: Okay, have a nice day. Sentence7: I don't really care, what do you recommend? I will need the postcode and entrance fee please. Sentence8: I am also looking for museums in the area. Sentence9: How about Cambridge Contemporary Art? The entrance is free and the postcode is cb21su. Enjoy! Sentence10: There are many museums listed in the centre area, what kind of museum are you interested in? Sentence11: No problem. Your taxi has been reserved. Your driver's contact number is 07035811281 and will be driving a grey toyota. Is there anything else you need today? Sentence12: Thank you. I would also like a taxi to commute between the two places. Sentence13: There are many expensive restaurants in the centre of town, is there a specific type of food you would like? Sentence14: The Meze Bar restaurant matches your tastes. It is located at 196 Mill Road City Centre. The postcode is cb13nf. Question: Who has spoken the sentence 10? (A) User (B) System

Ex Output:
Answer: (A) User

Ex Input:
Sentence1: Is there any Indian food on the west side of town. Sentence2: You're welcome. May I help with another query? Sentence3: Cocum is located at 71 Castle Street City Centre and their phone number is 01223 366668. Their price range is expensive. Sentence4: The price range doesn't matter. Sentence5: There are 6 Indian restaurants in the west part of town. What price range do you have in mind? Sentence6: There are no Hungarian restaurants in the west of town. Would you like to change your query? Sentence7: I would like a Hungarian restaurant in the west of town. Sentence8: Yes, but just for one. Sentence9: Would you like the name, address and phone number of a few of them? Sentence10: Goodbye. Sentence11: Thank you! Sentence12: Nope, I'm good. Thanks again. Question: Who has spoken the sentence 9? (A) User (B) System

Ex Output:
Answer: (B) System

Ex Input:
Sentence1: The alexander bed and breakfast is a cheap hotel in the centre area with free parking. Do you want me to book it? Sentence2: Starting from sunday, please. Sentence3: Thanks for you're help. May I also have the address and phone number of the restaurant. Sentence4: Thanks can I also get a restaurant? I am looking for one in the centre of town serving korean food Sentence5: Which three nights would you like me to book the hotel for? Sentence6: There are many options to choose from but all of them are guesthouses except one. Do you need a hotel or can it be a guesthouse? Sentence7: Not a problem. You will be picked up by a white volvo, contact number 07532822307. Sentence8: Hi, I am looking for a cheap 4-star hotel near local restaurants. Sentence9: No problem. Your booking was successful for four people, starting Sunday for three days. Your reference number is 3BUQP529 . Sentence10: No, but I will need a taxi to the restaurant. I'll need to get from the Alexander B&B to Little Seoul, leaving the hotel at 13:30. Sentence11: Yes, please book it for 4 people and 3 nights. Sentence12: Of course, have a nice day! Sentence13: I don't mind what type of hotel. But it needs to be in the centre and offer free parking. Sentence14: Thank you for all your help! Sentence15: The only Korean restaurant in the center of town is Little Seoul. It's expensive, but very good. Would you like to book a table there? Sentence16: The phone number is 01223308681 and their address is 108 Regent Street City Centre. Question: Who has spoken the sentence 15? (A) User (B) System

Ex Output:
Answer: (B) System