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

Example input: 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 output: 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
Q: Sentence1: Great. Please book me 6 tickets. Sentence2: I recommend castle galleries located at unit su43, grande arcade, saint andrews street. Their phone number is 01223307402. Is there anything else I can help you with? Sentence3: Excellent, can you give me the postcode? Sentence4: Booking was successful, the total fee is 226.8 GBP payable at the station . Reference number is : TQQ2P14Y . Sentence5: Okay! When do you want to depart? Sentence6: Train ID TR5648 will be best for you. It will leave cambridge by 10:21 to arrive leicester by 12:06 and it will you cost 37:80 pounds. Sentence7: Please find me a train from Cambridge to Leicester Sentence8: You are welcome--have a great day! Sentence9: The postcode is cb23bj. Can I help you with anything else? Sentence10: nope that is it thanks for all of you help Sentence11: Woo that's steep but thank you. I also am interested in visiting the museum in the centre area of town, could you give me info on that? Sentence12: I'm leaving on Friday and I need to be in Leicester by 12:45. Question: Who has spoken the sentence 4? (A) User (B) System
A:
Answer: (A) User