Q: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Sentence1: Hi, I want to find some water and go boating somewhere around town. What do you have listed? Sentence2: I think maybe the north for this trip. Sentence3: Have a wonderful time in Cambridge! Sentence4: I have some great choices for you. There are two places in the centre of town, one in the north and one in east. Do you have a specific location? Sentence5: That is all I need, thank you. Sentence6: The Riverboat Georgina is in the North of town. It's located at Cambridge Passenger Cruisers, Jubilee House. May I help you with anything else? Question: Who has spoken the sentence 4? (A) User (B) System
A:
Answer: (A) User