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: Of course. The restaurant is on 152 - 154 Hills Road and their phone number is 01223413000. Sentence2: What other restaurants are in the same area and price range? Sentence3: I'm sorry. That booking was not available. Would you like to find another restaurant? Sentence4: No, could you just book a table for 3? I'd like it for Wednesday at 12:15. Sentence5: That sounds good book it for 3 on wednesday at 12:15 please and I'll need the reference number too Sentence6: Thank you and you too. Sentence7: Yes can I have the address and phone number please? Sentence8: I'm sure we can. Cambridge offers 31 moderately priced restaurants. What sort of cuisine would you like? Sentence9: There is the restaurant alimentum that serves modern european food? Sentence10: Great, that's all I needed. Have a lovely day. Sentence11: I have made a reservation for you at the restaurant alimentum on Wednesday at 12:15 for 3 people. Your reference number is LX2XAAF4 . Would you like their address? Sentence12: I would prefer Italian and it has to be in the south. Sentence13: Hi! Can you find me a moderately priced restaurant for my girlfriend and I? Sentence14: I found one restaurant with those credentials, it's Pizza Hut Cherry Hinton, would you like the address? Question: Who has spoken the sentence 9? (A) User (B) System

Output: Answer: (B) System

Input: Consider Input: Sentence1: Okay, great. Have a safe trip. Goodbye. Sentence2: Yes please. I need it booked for 1 person for 2 nights starting tuesday. Can i get a reference number? Sentence3: I have found the allenbell guesthouse. It meets all of your criteria, is in the cheap price range, and provides internet and parking. Would you like me to book it? Sentence4: Thank you, that is it for today. Goodbye. Sentence5: The reference number for your booking is KEBFTR7I . Can I do anything else for you? Sentence6: I need a place with rated 4 stars in the east. Can you help me find one that like a guesthouse? Question: Who has spoken the sentence 1? (A) User (B) System

Output: Answer: (B) System

Input: Consider Input: Sentence1: Sorry, there are no rooms available for your specifications. Do you want to try a different day or a shorter stay? Sentence2: I also need to find something called gonville and caius college, can you help? Sentence3: I am looking for a gueshouse to stay in during my visit. I would like for it to be in the east section of town. Sentence4: There are no 4 star expensive guesthouses on the East side of town. Would you be interested in a cheap or moderately priced one instead? Sentence5: Try for 1 night instead. If that works, can I have the reference number? Sentence6: You are welcome. Have a pleasant stay. Sentence7: No problem, the postal code is cb21ta. Did you need the phone number as well? Sentence8: How about the Autumn House for 1 night starting Saturday and your reference number is SVCIWLWA . Sentence9: Yes please. Can you book the reservation for Saturday for 5 guests for a 2 night stay. Thanks. Sentence10: No thanks - I'm all set. Thank you for your help today. Sentence11: There are six entries, do you have any other preferences in hotel choice? Sentence12: Gonville and Caius College is located in the center of town on Trinity Street. Anything else I can do for you? Sentence13: I'd like a 4 star place that's on the pricier side. Sentence14: Autumn house is cheap and has free internet and parking. Would you like me to book a reservation for you? Sentence15: I would like one that is cheap then. Sentence16: Can I get the postcode? Question: Who has spoken the sentence 2? (A) User (B) System
Output: Answer: (A) User