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

Sentence1: Are there any expensive european restaurants around? Sentence2: I found 5 expensive european restaurants. Which area of town would you like to look in? Sentence3: I would suggest train ID TR5722 which leaves at 21:59 and arrives at London Liverpool Street at 23:27. Sentence4: No thanks. I think that's all. Have a nice day. Bye. Sentence5: City Stop Restaurant, 01223363270, post code is, cb41uy,Cambridge City Football Club Milton Road Chesterton. Anything else? Sentence6: That sounds like it would work. Please make a reservation for 4 people on that train, please. Sentence7: I want to travel on Tuesday Sentence8: What times do you have available? Sentence9: i need it to go to london liverpool street Sentence10: Alright, the booking was successful, the total fee is 66.4 GBP payable at the station. Your reference number is: RLF15GH7 . Can I do anything else for you? Sentence11: Great! You're quite welcome. Goodbye! Sentence12: I also need a train leaving cambridge after 21:15. Sentence13: What is your destination? Sentence14: I don't have a preference, what do you recommend? I'll need the area, address and phone please. Sentence15: What day would you like to travel? Sentence16: I have several. Is there a time you would like to arrive by? Question: Who has spoken the sentence 2? (A) User (B) System
Answer: (A) User