You will be given a definition of a task first, then some input 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'd love it if we could stay in the centre of town. Also, I would like it to be three stars. Sentence2: I've reserved a table for 6 at ugly duckling at 14:45 on Saturday. Your confirmation number is G6RS8PAR . Sentence3: Ah... just pick one that you recommend and do a reservation for 6 at 14:45 on Saturday. Sentence4: Sure, can I narrow down your preference a bit? Is there a part of town you prefer? Sentence5: No thanks, just gathering info, thank you so much for your help, have a good evening. Sentence6: I was happy to help. You have a good evening, as well. Good-bye. Sentence7: Is this a hotel or a guesthouse? Sentence8: It is a hotel. Would you like to book it? Sentence9: Can you tell me what the price range is at the Gonville Hotel? Sentence10: There are 10 results for that search. Can I narrow that down with a price range you'd like to stay in? Sentence11: Yes certainly it is in the expensive price range. Sentence12: I'd like an expensive restaurant, please. Sentence13: Great. Gonville hotel should meet your needs. Would you like me to book it for you? Sentence14: am also looking for a place to stay. The hotel should include free parking and should include free wifi Sentence15: Can you assist me to find Restaurants in the Center of Cambridge that serves Chines foods? Sentence16: There are four. Would you like a table, or more information? Question: Who has spoken the sentence 1? (A) User (B) System
Output:
Answer: (B) System