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

Sentence1: Goodbye and have a nice day. Sentence2: Little Seoul's address is 108 Regent Street City Centre. Their phone number is 01223 308681. Sentence3: Thank you, goodbye. Sentence4: There are several restaurants located in the centre, which kind of food do you prefer? Sentence5: is there a restaurant in the Centre? Sentence6: Little Seoul serves Korean food in the city's centre. It is expensive but very classy. Would you like to know more about it? Sentence7: I would like one serving korean food, possible. Sentence8: Can I get the address and phone number? Question: Who has spoken the sentence 3? (A) User (B) System
Answer: (B) System

Sentence1: How about TR9382? Sentence2: I would like to leave on Sunday. Sentence3: I think that'll work. I need to reserve two seats, can you help me with that? Sentence4: Booking was successful, the total fee is 7.04 GBP payable at the station. Reference number is : 6NJA0V8R . Sentence5: You're very welcome. Have a great day. Sentence6: Well I need to leave after 14:45, so if it is after that time that'll work. Sentence7: Thank you. That's all I need for now! Sentence8: Hi. I'm looking for a train from ely to cambridge, if there is one. Sentence9: TR9823 will leave at 15:35, how does that sound? Sentence10: Okay, what day do you want to leave? Question: Who has spoken the sentence 5? (A) User (B) System
Answer: (B) System

Sentence1: Okay, the reference number is KVTFY7CR . Is there anything else you need? Sentence2: Monday, and I would like to get there by 21:15. Sentence3: I was hoping to visit the cambridge university botanic gardens. Sentence4: Where will you be departing from? Sentence5: The postcode is cb21jf. The phone number is 01223336265 and they are located on bateman street. Is there anything else i can help you with? Sentence6: Cambridge University Botanic Gardens is located at Bateman Street in Centre with an entrance fee of 4 pounds. Do you need more information? Sentence7: No, that's it for me today. Thanks very much for your help. Sentence8: cambridge, I need 5 tickets and the reference number Sentence9: I sure can! What day are you looking to travel? Sentence10: Yes, I will need the phone number, postcode and address please. Sentence11: enjoy your time in Cambridge! Sentence12: I'll need a train to Birmingham New Street. Can you help with that? Question: Who has spoken the sentence 5? (A) User (B) System

Answer: (B) System