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'd like to find a 4 star guesthouse, please. Sentence2: The Place is a great nightclub in the south, located at 22 sidney street, post code cb23hg. The phone number is 01223324600. Is there anything else I can help you with? Sentence3: Yes, book it for me please. Thank you. Sentence4: It does not really matter. It will be just me starting on Friday for 3 nights. Sentence5: What attractions do you have in the south? Sentence6: I have found 18 guesthomes that match the criteria you listed. Is there any other specifications you have about the guesthouse (area,price range,etc) that you would like to tell me? Sentence7: Unfortunately, the booking was unsuccessful. Would you like to shorten your stay or try another place to stay? Sentence8: arbury lodge guesthouse is a moderately priced guesthouse in the north. How does that sound? Sentence9: The arbury lodge guesthouse is in the moderate price range. Sentence10: We have 8 types of attractions in the south? What type are you looking for? Sentence11: Sure, is there an area you prefer? Sentence12: I have to have free wifi Sentence13: I would like a room that is close to the nightclub for atleast 1 night up to 3 nights? Sentence14: Hmm, I'm not really sure. Do you happen to have any nightclubs? If not, what are my choices? Question: Who has spoken the sentence 6? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: I do not have all of that information at this time. Can I talk to you again when I know more? Sentence2: I am looking for a hotel with free parking in the North. Sentence3: Okay. Please help me book this guesthouse. Sentence4: Yes that is all right. Sentence5: Yep there are 5 guesthouses. Do you wanna just try acorn guest house? Sentence6: Are any of those 11 guesthouses? Sentence7: Does it offer free wifi? Sentence8: It's my pleasure. Have a nice trip! Sentence9: What day, number of nights, and number of people would you like to book for? Sentence10: Thank you for your help! Sentence11: Yes, it does have internet. Sentence12: There are 11 hotels that meet your needs. Would you like to narrow them down by price range? Question: Who has spoken the sentence 9? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: I was able to book you a room for 1 night at the guesthouse. The reference number is NEZYKV5E . Is there anything else I can do for you? Sentence2: The arbury lodge guesthouse is the north area with free parking and wifi. Would you care to book a room here? Sentence3: I'd like it to have free parking and free wifi. Sentence4: Alright, can you try for just one night? Sentence5: I am visiting in the northern area of town. I need to find me a place to stay for the night. Can you help? Sentence6: The Arbury Lodge is unavailable for 3 nights on Saturday. Can you select another day or for fewer days? Sentence7: No, that should do it. Thanks so much for your help! Sentence8: Have a great day! Sentence9: Is the Arbury Lodge moderately priced? If so, I would like to book a room for 1 person for 3 nights on Saturday. Sentence10: There are 11 guesthouses and 2 hotels in the north. Do you have a preference as to type or other requirements? Question: Who has spoken the sentence 6? (A) User (B) System
Example Output:
Answer: (A) User