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

Example Input: Sentence1: Thank You good bye Sentence2: Yes. Kymmoy is an expensive restaurant serving asian oriental food in the centre part of town. Sentence3: Thank you. May I have their phone number? Sentence4: Their number is 01223 311911. Will that be all today? Sentence5: Yes, thank you. Sentence6: There is not matching places that fits your request. Can i help you with something else? Sentence7: Are there any Asian Oriental restaurants in that price range? Sentence8: I'd like to find an expensive restaurant that serves venetian food. Question: Who has spoken the sentence 7? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: Might I suggest the Autumn House. It is a cheaper guesthouse that offers both free parking and free internet. Would you like more info for them? Sentence2: It really doesn't matter. I don't need internet. I just for sure want a 4 star place. Sentence3: Thank you! Can you also get me a train going to Cambridge that day? Sentence4: Sure. There are six different options in that area. What were you looking for as far as price range and amenities? Sentence5: Is there anything else that you need? Sentence6: I need a 4 star hotel in the east, please. Sentence7: I think this is what I needed. Thanks. Sentence8: Sure! I just need to know where you plan on departing from and what time you'd like to leave. Sentence9: Booking was successful. Reference number is : 544D87NG . Sentence10: I need a room for 4 for 4 nights starting on Tuesday. Question: Who has spoken the sentence 3? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: I'm leaving from gallery at twelve a high street. Sentence2: I need a taxi to take me to rajmahal. Sentence3: No, that's it. Thank you so much! Sentence4: And when would you like to leave? Sentence5: Thank you for your help. Sentence6: You're quite welcome. Is there anything else I can assist you with? Sentence7: I have you booked in a grey audi. Sentence8: Where will you be departing from? Sentence9: It was my pleasure. Have a nice day. Sentence10: Contact number is 07270553802 Sentence11: Thank you, can you give me the contact number please? Sentence12: I would like to leave after 3:45. Question: Who has spoken the sentence 4? (A) User (B) System
Example Output:
Answer: (A) User