Given the task definition and input, reply with output. You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Sentence1: Where are some places to go on the east side of town? Sentence2: I've heard the Camboats are fun, as well as the Funky Fun House. Do either of those interest you? Sentence3: I have confirmed your reservation at the cambridge chop house for Monday at 14:30. Your reference number is VA1DPB9K . Do you need any further assistance? Sentence4: We have 10 listings for the east area. What type of attraction are you interested in? Sentence5: Alright, I have a taxi booked to take you from Camboats to the Chop House. It will be a grey BMW, the contact number is 07699651220. Sentence6: You're welcome. Enjoy your stay! Sentence7: I'm looking for an expensive place to eat that serves British food, are there any in town? Sentence8: Okay, I think I'd like to do the Caamboats. Sentence9: What's the attraction type? I need a taxi to commute to the restaurant by my reserved time from the attraction, and will need the contact number and car type. Sentence10: The Camboats are boats, while the Funky Fun House is entertainment. Sentence11: Okay, I think that's all I need. Thanks for the help! Sentence12: No, but I need to book a table for 4 people at 14:30 on monday. Sentence13: Actually, I would like you to make a recommendation for me. Sentence14: There are 6 restaurants that meet that criteria. Do you have a preferred area? Question: Who has spoken the sentence 6? (A) User (B) System
Answer: (A) User