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 have pulled up City Stop Restaurant. What information do you need? Sentence2: I would like to book a table there for 4 peole on saturday at 19:45. and can i please get a reference number? Sentence3: Alright, thank you very much. That's all I need for now. Sentence4: Booking was successful. The table will be reserved for 15 minutes. Reference number is : OMKMNJEM . Sentence5: I am looking for information about city stop restaurant? Sentence6: You are welcome. Goodbye. Question: Who has spoken the sentence 3? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: I would actually like to book it for 8 people, not 3. Sentence2: Could you reserve the one in the centre of town for 3 nights starting Monday? There will be 3 of us. Sentence3: You're welcome. Glad to help! bye bye! Sentence4: Sure no problem. So the hotel is huntingdon marriott hotel and your reference number for the booking is 34BAQ2WK . Is there anything else I can help? Sentence5: I am looking for a hotel in the expensive price range. Sentence6: Unfortunately, I wasn't able to book you for the day and time you wanted. Would another day or time be alright? Sentence7: No, it doesn't matter. I would like a 4 star hotel with free parking though. Sentence8: That's great. I'm all set , thank you! Sentence9: There are 5 expensive hotels available. Did you have a preference as to area of the hotel? Sentence10: There are two, one in the west and one the centre of town. Sentence11: I couldn't book that one either. Would you like to change your criteria? Sentence12: Okay, could you try the other one, please? Question: Who has spoken the sentence 1? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: I have the Lensfield Hotel, but it is on the south side. Would that do? Sentence2: Yes, I am looking for local hotels. I would prefer they be rated at least 3 stars and are on the expensive side. Sentence3: Yes. Please book the gonville hotel for 8 people and 4 nights starting on Monday. Sentence4: Yes both have free wifi. Can I check booking for either of these? Sentence5: Gonville hotel and the lensfield hotel are both expensive in the 3 star range. Sentence6: You have been booked for 8 people for 4 days starting Monday at the Lensfield. Your confirmation number is C0YCW45C . Can I do anything else for you? Sentence7: Alright, glad I could help. Sentence8: No, that's all I needed. Have a nice day. Sentence9: I also need free wifi. Sentence10: Yes, can you book it for me? Sentence11: Please book a different hotel in the same price range. Sentence12: The booking was unsuccessful, would you like to try another place? Question: Who has spoken the sentence 7? (A) User (B) System
[EX A]:
Answer: (B) System