You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Example: Sentence1:i need a place to dine in the center thats expensive Sentence2: I have several options for you; do you prefer African, Asian, or British food? Sentence3: Any sort of food would be fine, as long as it is a bit expensive. Could I get the phone number for your recommendation?Question: Who has spoken the sentence 2? (A) User (B) System
Example solution: Answer: (A) User
Example explanation: The sentence 1 is said by a user because the intent of it says that the information has to be gathered from the system

Problem: Sentence1: I would like to know if it is available for 8 people for 4 nights starting Saturday Sentence2: Hi, I'm looking for a hotel by the name of Acorn Guest House. Sentence3: Yes please, can you help me find a train from Birmingham New Street to Cambridge on Friday? Sentence4: Sure, what would you like to know about it? Sentence5: Booking was successful. Reference number is : ZZPP7K9D . Is there anything else I can help you with today? Sentence6: There are 12 trains matching your search. Will you be wanting me to book one for you? Sentence7: I would like to leave after 12:30 and leave on Friday. Sentence8: Booking was successful, the total fee is 600.79 GBP payable at the station. Your on train number TR4431 and your reference number is FL53PCPE . Anything else today? Sentence9: Yeah, choose one and book it for 8 people. Then give me the reference number Sentence10: Sure, what time would you like to leave? Sentence11: Have a nice trip! Sentence12: No, that's all for me! Thanks so much, goodbye! Question: Who has spoken the sentence 6? (A) User (B) System

Solution: Answer: (A) User