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

[EX Q]: Sentence1: I'd like to find an expensive restaurant in the north part of town. Sentence2: The restaurant should serve asian oriental food. Sentence3: You are welcome. Sentence4: Yes, I would like to be booked for a table for 8 on 19:45 on a Saturday, and could I also get the reference number? Sentence5: Your reservation has been made and the reference number is 3P2ALRY0 . Sentence6: I have one restaurant called saigon city on 169 high street chesterton chesterton. Would you like me to book for you? Sentence7: There are many restaurants in the North that match your description, what type of cuisine are you interested in? Sentence8: Thank you for your help. Question: Who has spoken the sentence 3? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: Are there any that serve north american food? Sentence2: yes. please book for me a table for thee tommorow diner at 8 pm Sentence3: There phone number is 01223312598. Is there anything else I can assist you with? Sentence4: Yes, there is gourmet burger kitchen. It is an expensive restaurant. Would you like me to book it for you? Sentence5: Yes, the University Arms Hotel is located in the centre area and is on Regent Street. Would you like me to book a room for you? Sentence6: Okay can you also help me with a restaurant that serves Cantonese food in the city center? Sentence7: I just need their phone number. Sentence8: I need information on the university arms hotel. Sentence9: No I am good for now, thanks for all of your help. Sentence10: I need more info. Does the hotel have free parking and what is the price range? Sentence11: There aren't any restaurants in the city centre that serves Cantonese food. Would you like to try a different type of cuisine or try a different area? Sentence12: Thank you for contacting us and have a nice day. Sentence13: You asked about a hotel. Would you like to book a room or would you like me to help find a restaurant? Sentence14: It is in the expensive price range, but it does have free internet and free parking. Question: Who has spoken the sentence 9? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: I just need to ensure the taxi gets me from the museum to the restaurant by my reservation time. Can you swing that? Sentence2: What type of place would you like to go to? Sentence3: I have about 11 different museums in the centre of town. Do you have any certain type of museum in mind. I have art museums, one with antiques, etc. Sentence4: I want to go to a museum. Sentence5: Whichever one you think, and please provide etrance fee as well. Sentence6: I got you a red tesla taxi. The contact number is 07456538406. Sentence7: Yes, could we try for 13:45. That would work for me. Sentence8: Where would you like to leave from and what time? Sentence9: Oh dear. I was unable to make that reservation. Could we try another time? Sentence10: Okay, that's all I needed. Thank you. Sentence11: There are 9 Italian restaurants in town, did you have a price range in mind? Sentence12: Sure, book it for 3 people at 14:45 on Monday. Sentence13: I am planning my trip to Cambridge and looking for a restaurant in the centre that serves italian food. Can you help me? Sentence14: Enjoy your trip and please call back if you need anything else. Sentence15: Yes, I'd like to find a place to go in the same area as the restaurant. Sentence16: I would like a moderately-priced restaurant. Sentence17: They are all free. There is williams art and antiques, I like that one. Sentence18: I found Pizza Express on Regent Street, would you like me to book it for you? Sentence19: I've booked it for 13:45 and your reference number is XEO5JPU2 . Can I help you any further? Sentence20: Great can I also get a taxi to take me between the two places? Question: Who has spoken the sentence 10? (A) User (B) System
[EX A]:
Answer: (A) User