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

Ex Input:
Sentence1: Yes, that sounds great! Can I get it for 8 people for 3 nights please, we'll be arriving Tuesday. Sentence2: Great. Are there any trains that go directly from Cambridge to Norwich? Sentence3: Thank you for using our service. Have a good day. Goodbye. Sentence4: Yes, there are several. The trip time is 79 minutes and the cost is generally 17.60 pounds. Can I tell you anything else? Sentence5: I am looking for a guesthouse please. Sentence6: Would you like to try the Alpha-Milton Guest House located in the North? Sentence7: No, that's everything I needed. Sentence8: Any area as fine, as long as it has 3-star accommodations. Sentence9: How about for 2 days? If it's available will you please book and provide a reference number? Sentence10: I'm sorry, the hotel is unable to accommodate your party. Can you arrive on a different day or stay for a different number of days? Sentence11: In what area would you like it to be? Sentence12: I have successfully booked it for 2 days, and your reference number is OUKN0U42 . Question: Who has spoken the sentence 6? (A) User (B) System

Ex Output:
Answer: (A) User

Ex Input:
Sentence1: Okay! What time do you need it for? Sentence2: Can I help you with anything else? Sentence3: That is all I need today thank you. Sentence4: I need to arrive by 04:45 Sentence5: I need a taxi to come to curry garden and take me to nandos. Sentence6: Have a wonderful day! It was a pleasure to serve you. Sentence7: That is all. Good bye. Sentence8: I have booked you a white volvo, contact number is 07985113779. Is there anything else? Question: Who has spoken the sentence 1? (A) User (B) System

Ex Output:
Answer: (B) System

Ex Input:
Sentence1: Restaurant Alimentum's phone number is 01223 413000. Sentence2: You're very welcome. Have a good evening. Sentence3: I am looking for a moderately priced restaurant in the south part of town. Any kind of food is good with me; I would just like to know the phone number of the venue you find. Sentence4: Can you tell me what type of food they serve? Sentence5: Restaurant Alimentum serves modern European food. Sentence6: Thank you, goodbye. Question: Who has spoken the sentence 1? (A) User (B) System

Ex Output:
Answer: (B) System