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 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 believe that's all I need. Thanks! Sentence2: It is an expensive restaurant on the west side of town. Would you like me to reserve a table for you? Sentence3: Yes I have many options for you. How about the Tandoori Palace? Sentence4: I'm looking for an Indian restaurant in the west. Sentence5: That might work. What is the price range of Tandoori Palace? Sentence6: Sure, it is located at 68 Histon Road Chesterton in the cb43le post code. Can I help with anything else today? Sentence7: You are welcome. Have a nice day. Bye. Sentence8: No that's OK, but could you give me their address and postcode please. Question: Who has spoken the sentence 1? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: I am sorry, but that hotel does not have a 4 star rating, would you like another option? Sentence2: Booking was successful for the royal standard. The table will be reserved for 15 minutes. Your reference number is : 4W94X4GE . Is there anything else I can help with? Sentence3: Yes, I am looking for a gastropub near the hotel. Sentence4: Great! I think that's all I need today. Thank you for you help! Sentence5: How about Royal Standard? It's a gastropub located at 290 Mill Road City Centre Sentence6: express by holiday inn cambridge meets your criteria. Sentence7: I've booked you a taxi from "a and b guest house" to "royal standard." The car is a blue audi and the Contact number is 07009978153. Sentence8: Thank you I also need a taxi between the two places please to get to the restaurant by 11:45 Sentence9: Great, you're booked with reference number Y5Z7GN2R . Anything else I can help you with? Sentence10: Is there a 4 star guesthouse in the east? Sentence11: Can I book one of them for 8 people for 4 nights starting tuesday and get the reference number? Sentence12: Excellent. One more thing: is that in the expensive price range? Sentence13: there are 5 four star guesthouses in the east Sentence14: Yes, royal standard is an expensive gastropub. Sentence15: Does it have 4 stars? Sentence16: Terrific. Can you book a table for the same group of people at 11:45 on the same day and provide me with the reference number? Sentence17: Thank you for using our service. Please contact us again if we can be of further assistance. Sentence18: I would like to stay at a hotel in the east, please. Question: Who has spoken the sentence 7? (A) User (B) System
[EX A]:
Answer: (B) System