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

[Q]: Sentence1: Does it have internet? Sentence2: I can help you with that I just need to know what time you'd like to be picked up from the guesthouse? Sentence3: No, that is it. Thank you so much. Sentence4: I have 3 great guesthouses in the east. I recommend Warkworth House. Would you like to book a room? Sentence5: The Yu Garden is a Chinese restaurant in the East, would you like to book a table? Sentence6: How about a Chinese restaurant? Sentence7: There are no australasian restaurants in the east. Would you like to try a different cuisine or can I check another area for you? Sentence8: Can i get the address and number to Yu Garden? Sentence9: I'm happy to be of service, and thank you for using the Cambridge TownInfo Centre! Sentence10: I would like to leave at 5:45. Sentence11: Yes it does. Would you like to make reservations? Sentence12: Hi, I am looking for a nice moderately priced hotel located in the east. Sentence13: Okay, thanks. I'm also looking for a place to eat that serves Australasian food. Can you help me with that? Sentence14: Warkworth does offer internet. Sentence15: Yes, the address is 529 Newmarket Road Fen Ditton and the postcode is cb58pa. Sentence16: The taxi will pick you up at the guesthouse at 05:45 and will be in a white lexus. Their contact number is 07730745339. Is there anything else I can help you with? Sentence17: Thank you. I also need a taxi to get between the two places. Sentence18: Maybe. Does it have 4 stars? Question: Who has spoken the sentence 3? (A) User (B) System
[A]: Answer: (B) System

[Q]: Sentence1: I need to find a hospital nearby that has a hepatobillary and gastrointestinal surgery referral center Sentence2: No, that's it. Thanks! Sentence3: No, I just need the postcode. Sentence4: You're very welcome. Have a great day! Sentence5: Certainly. The postcode is CB20QQ. Anything else I can help you with today? Sentence6: Addenbrookes Hospital located at Hills Rd, Cambridge has that department. Would you like the phone number to that direct department? Question: Who has spoken the sentence 5? (A) User (B) System
[A]: Answer: (B) System

[Q]: Sentence1: I have two different ones that are great. One is cheaper and the other is moderately priced. Do you have a preference? Sentence2: Yes, there are 70 different options Do you have a preference for day, and time? Sentence3: Yes, please! I'd like it for 15:15 on Thursday for 7 people. Sentence4: That won't be necessary. Sentence5: Yes, I'd like to leave Cambridge on Friday, sometime after 12:30. Sentence6: Booked! Reference number: S22TYNUQ . The table is reserved for 15 minutes. Sentence7: I've got a craving for some pasta. Can you find me a good Italian restaurant on the west side of the city? Sentence8: That's the la margherita. Do you want me to book a reservation? Sentence9: Great. I also need a train to stevenage. Sentence10: No, that will be all thank you for your help. Sentence11: There is a train that leaves at 1:21pm and arrives at 2:10pm. Do you want me to book? Sentence12: Thank you so much for using our services! Goodbye. Sentence13: Is there anything more I can help you with? Sentence14: Yes, definitely the cheap one. Question: Who has spoken the sentence 10? (A) User (B) System
[A]:
Answer: (A) User