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: When are you planning to travel? Sentence2: Yes, the 18:40 would work, how much does it cost? Sentence3: The earliest train after that time is TR7696 that leaves at 18:40 and arrives at the airport by 19:08. Would that work? Or, I have later trains. Sentence4: The price per ticket is 10.10 pounds. Would you like me to go ahead and book it for you? If so, for how many tickets? Sentence5: enjoy your stay in cambridge! Sentence6: Yes, thank you. Sentence7: That's OK, no thank you. Are there any nightclubs in town? Sentence8: Monday. I need to leave after 18:15 Sentence9: Yes there's 6 in the centre and 1 in the south. Sentence10: No thank you that is all. Sentence11: What's the postcode for the one in the south? Sentence12: Please help me book a train from Cambridge to Stanstead Airport. Sentence13: Is there anything else I can do for you? Sentence14: The nightclub called the Place is located at the postcode cb23hg. Question: Who has spoken the sentence 13? (A) User (B) System
Solution: Answer: (B) System