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

Example Input: Sentence1: that is great! thank you for all your help. Sentence2: I need help finding an expensive restaurant in the centre, can you help me please? Sentence3: Thank you for calling and have a great day. Sentence4: I have found the backstreet bistro and the slug and lettuce, which one would you like more information on? Sentence5: Yes both are in the expensive price range Sentence6: I'd love to help. We have 33 expensive restaurants. Do you have a cuisine you'd prefer? Sentence7: Do anything of them serve gastropub food? Sentence8: I want to book a table for 4 people at 16:15 on a Tuesday please. Sentence9: Can I have the munber in your party and the day and time you would like to book? Sentence10: Great! Here is the address, 34 - 35 Green Street. Sentence11: Okay I was able to book you then at The Slug and Lettuce and your reference number is FSOF58OO . Sentence12: Yes, I'm looking for gastropub food. Sentence13: Thank you so much. That is all I need. Sentence14: Any one will be fine. I need the reference number please after its booked. Question: Who has spoken the sentence 2? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: i need to know how how much the entrance fee is and the postcode if you may please? Sentence2: Is there anything else I can help you with? Sentence3: It is 8.08 pounds Sentence4: I will be traveling on Saturday and would like to arrive by 17:45. Sentence5: Thank you and goodbye Sentence6: Thank you! Can you also look up Cherry Hinton Hall and Grounds for me? Sentence7: What day and time time will you be travelling? Sentence8: Ok, thank you. Sentence9: Hi, I'll be visiting Cambridge soon, and I need a train from Stansted airport. It should arrive by 17:45. Can you help? Sentence10: No, thank you, that will be all. Sentence11: Yes, that would be perfect! What's the price of one ticket? Sentence12: Sure thing it is in the east of town, what information would you like to know about it? Sentence13: The post code is cb18dw but I do not have the information on the entrance fee. Sentence14: Great, there's a train departing at 16:24 and arriving at 16:52. Will this work? Question: Who has spoken the sentence 6? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: The restaurant is all booked, reference is QAHKT2ZI . Sentence2: Yeah, and I would also like a taxi to get to the Meghna from the Tenpin by the reservation time, 12:30. I will need the contact number and car type. Sentence3: Tenpin is located on the south side, cambridge leisure park, clifton way. It's phone number is 08715501010. Do you wish to know more? Sentence4: Well I really need something on the west side. What about moderately priced Indian food? Sentence5: Sure. Can you book a table for 2 people at 12:30 on Sunday? I'll need the reference number please. Sentence6: Yes, could you tell me what type of attraction this is? Sentence7: Tenpin's number is 08715501010. I've booked you a taxi in a black ford, contact number is 07634445815. Can I help you with anything else today? Sentence8: Can you also help me find an attraction called Tenpin? Sentence9: There is "international" cuisine. Can you elaborate on what you mean by Crossover? There are places that serve what we call "Modern European" food. Sentence10: No, you have been very helpful. Thank you for everything. Sentence11: OK, great, I'm glad you are satisfied. Have a nice time! Sentence12: Are these places in the moderate price range? Sentence13: There is one Indian restaurant on the west side that is moderately priced. It is the Meghna. Would you like to book a table there? Sentence14: I have The Varsity or Bloomsbury restaurants that both serve international food, are located in the city center and are in the moderate price range. Sentence15: I just need to make sure the taxi will arrive at the restaurant by the booked time of 12:30. Sentence16: I have scheduled the arrival at 12:30. If you would like me to change the time, I can certainly do that. Sentence17: Sure, it's an entertainment venue, did you want their phone number? Sentence18: I'm looking for some places that serve crossover food. Question: Who has spoken the sentence 17? (A) User (B) System
Example Output:
Answer: (B) System