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

Example Input: Sentence1: Ok. I was able to book the table for three. Your reference number is 0FOAJA8A . Sentence2: Okay thank you. What time would you like to leave? Sentence3: ok, thank you and enjoy your stay! Sentence4: I'm travelling from norwich. Sentence5: I need to catch a train to get to the restaurant. Can you help with that too? Sentence6: There are 21 restaurants matching your criteria. Is there a type of cuisine that interests you? Sentence7: TR4387 arrives at 07:35, would that work for you? Sentence8: Let's go with Pizza Express, can you book for 3 at 13:30 on thursday please. Sentence9: You'll have to tell me where you are departing from? Sentence10: I need to arrive by 8:00. Sentence11: There are 2 choices, pizza express serves Italian food with a moderate price range, or pizza express Fen Ditton also in the moderate price range. Which shall I reserve? Sentence12: which day do you want to travel? Sentence13: Possibly Italian if that's available for 3 people on Thursday at 13:30. Sentence14: Booking was successful, the total fee is 52.8 GBP payable at the station .Reference number is : 5K7P12XZ . Sentence15: Please list all restaurants in Cambridge centre in the moderate price range. Sentence16: Thank you so much, If you can please leave a review for us. I hope your trip is amazing and very enjoyable. Sentence17: Yeah could I get three tickets please? Sentence18: I want to get there thursday please. Question: Who has spoken the sentence 14? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: Price range doesn't really matter, but I do want a 4-star place with free parking and internet. Sentence2: I have 19 hotels that match that criteria. please be more specific about the area of town where you'd like to stay Sentence3: Do you prefer a formal hotel, or a guesthouse? Sentence4: OK, what price point do you want me to look for? Sentence5: Booking was successful at the alexander bed and breakfast. Reference number is : MDB2AV4K Sentence6: i need a place to stay Sentence7: The area doesn't matter. Please book for 6 people on Saturday with 4 nights stay. Sentence8: Can you give me a suggestion for a hotel and make that reservation please? Thanks. Question: Who has spoken the sentence 4? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: Okay great! Glad I could help. Sentence2: I have 19 trains going from Cambridge to Leicester on Thursday. What time would you like to arrive by? Sentence3: I also need a place to stay in the north area. Sentence4: There are no trains that leave after 12:15. Sentence5: I was able to book you a room for 2 at city centre north b and b, the reference number is 57F4S22N . Do you need any more assistance? Sentence6: No, that's all I need for right now. Thanks for the assistance! Sentence7: It don't matter as long as it is cheap. I need it for 6 people for 2 nights starting tuesday Sentence8: Okay, do you have any other suggestions? Sentence9: I will be traveling on thursday. Sentence10: I believe that the TR0822 leaving 12:15 would be great for you. Should I make a booking for you? Sentence11: I would love to leave after 12:15 please. Sentence12: Please assist me in finding a train going to leicester from cambridge. Sentence13: Would you like a guesthouse or a hotel? Sentence14: Okay. What day would you like to travel? Question: Who has spoken the sentence 7? (A) User (B) System
Example Output:
Answer: (B) System