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

[EX Q]: Sentence1: Yes I need a table for two. Sentence2: No there isn't. Sentence3: What day and time would you like the booking for? Sentence4: Zizzi Cambridge please Sentence5: I'm sorry could you confirm what restaurant you wanted to reserve a table for 2 at? Sentence6: That sounds good can you please give me the address and phone number? Sentence7: thanks for booking the reservation. Goodbye. Sentence8: How about this Tuesday at 17:00? I can check if they have any available tables. Sentence9: Sure thing! Zizzi Cambridge contact info: Phone: 01223365599 Postcode: cb21ab Address: 47-53 Regent Street. Would you like me to make a reservation there? Sentence10: Sure that sounds good. Sentence11: There are 5 cheap Italian restaurants. Is there a particular area you're interested in? Sentence12: Hello I am looking for a restaurant that serves Italian food and I need it to be cheap. Sentence13: How about something local, such as Zizzi Cambridge? It's located at the centre. Sentence14: I don't know. Question: Who has spoken the sentence 7? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: 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 A]: Answer: (B) System

[EX Q]: Sentence1: No, that settles everything. Thanks! Sentence2: I'm leaving the graffiti. Sentence3: Can you get me a taxi that will transport me to scott polar museum by 02:15? Sentence4: You're welcome! Have a good one! Sentence5: I can have a black Honda pick you up, the contact number is 07290394135. Can I do anything else for you today? Sentence6: Where are you departing from? Question: Who has spoken the sentence 4? (A) User (B) System
[EX A]:
Answer: (A) User