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

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
Answer: (B) System

Sentence1: Galleria serves European food and is in the centre part of town and has a moderate price range. Sentence2: No restaurants serving australasian food can be found. May I find another type restaurant for you? Sentence3: Looking for someone that serves Australasian food? Sentence4: How about European food? Question: Who has spoken the sentence 3? (A) User (B) System
Answer: (B) System

Sentence1: Booking was successful, the reference number is Y9ZD16I2, any further questions? Sentence2: The cost for the train leaving Stevenage at 13:54, arriving Cambridge at 14:43 is 10.24 pounds, would you like me to book that for you today? Sentence3: Price is not an issue for me. Please recommend one of them for me. Sentence4: the south . and make it a guesthouse with free parking also. Sentence5: I don't have a departure time preference but I would like to arrive by 15:45. Sentence6: Sure! I recommend Rosa's Bed and Breakfast. Would you like to book a room? Sentence7: I would be happy to help with your request, but first I will need to know what time you'd like to leave/arrive at. Sentence8: That is all I needed today. Sentence9: what's the train ID? Sentence10: I'd be happy to help. Which day would you like to travel? Sentence11: Thank you for calling. I hope you enjoy your trip to our town. Goodbye. Sentence12: What is the price for that one? Sentence13: i have 3 guesthouses in the south. two are moderately priced and one is cheap. which do you choose? Sentence14: There are five trains to Cambridge on Saturday- the latest arrives at 14:43. Would you like me to book it for you? Sentence15: I am looking for information and could use your help finding a train. Sentence16: What area would you like to stay in? Sentence17: TR6607. Would you like me to book you on? Sentence18: I also need a hotel. I don't care about parking but it does need free wifi. Sentence19: Yes please. I need a room for 8 and 2 nights starting from Saturday. Sentence20: I need to leave stevenage on saturday. Question: Who has spoken the sentence 10? (A) User (B) System

Answer: (A) User