You will be given a definition of a task first, then an example. Follow the example to solve a new instance of the task.
You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

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
Solution: Answer: (A) User
Why? The sentence 1 is said by a user because the intent of it says that the information has to be gathered from the system

New input: Sentence1: The area isn't important but we also need free parking. Sentence2: I have 21 guesthouse. Is there a certain area or pricerange you would prefer? Sentence3: The first train leaving after 13:15 is the TR3066, departing Cambridge at 13:34, arriving Peterborough at 14:24. Would you like to reserve a seat on this train, or keep looking? Sentence4: Sure, what area of town are you interested in? Sentence5: That one sounds good. Can I book it for 8 people for 2 nights starting Saturday? Sentence6: I was able to book 8 train tickets for you at the price of 132 GBP, which is payable at the station. The reference number is 66HG2U6U . Sentence7: Thanks so much. Thats all I need. Sentence8: Hi, could you find me a guesthouse that includes wifi? Sentence9: What day are you wanting to go? Is there a certain arrival or departure time you're looking for? Sentence10: yes. please reserve seats for 8 people Sentence11: I was able to book acorn guest house, reference number is SM1GU7E5 Sentence12: Thank you and have a great trip. Goodbye. Sentence13: Thanks. Sound like a great place. Can you help me with a train to peterborough. Sentence14: I want to leave Cambridge on Monday after 13:15. Question: Who has spoken the sentence 1? (A) User (B) System
Solution:
Answer: (B) System