Instructions: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Input: Sentence1: Booking was successful, the total fee is 35.79 GBP payable at the station . Reference number is : N5FLMFK9 . Anything else you need? Sentence2: There are several trains available for you. Where are you departing from and what day would you prefer? Sentence3: Is there a time you would prefer to arrive? Sentence4: I'm looking for a train schedule after 15:15, going to Cambridge. Sentence5: i'm leaving from broxbourne to leave on saturday after 15:15 Sentence6: No, but I would like the booking made for two people. Sentence7: I'm glad we could help. Have a nice day. Sentence8: Sure thing! Your reference number is D1CJSO6Z . Sentence9: Thank you for your help! Sentence10: Yes, can you try for 18:45 instead? Sentence11: That is all, thanks again. Sentence12: I'm sorry, they didn't have that time available. Would you like to try a different time or a different day? Sentence13: Yes I have pizza hut city centre located at regent street city centre. Would you like to make a table reservation? Sentence14: Did you need any further assistance today? Sentence15: Yes, are there any italian restaurants in the center of town? Sentence16: Yes please. Can you book it for Saturday at 19:45 for 2 and get me a reference number? Question: Who has spoken the sentence 8? (A) User (B) System
Output:
Answer: (A) User