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

Sentence1: There is a train on Monday at 19:54. Sentence2: Thank you for your help. That is all for today. Have a great day! Sentence3: There are 10 cheap places to stay with free parking. Do you want particular area of town? Sentence4: Yes, i also need a train that departs from stevenage and goes to cambridge. Sentence5: I'm looking for a cheap place to stay that has free parking. Sentence6: I want it for monday and to leave after 19:15 Sentence7: 3 people staying at alexander bed and breakfast for 5 nights, starting monday. Your confirmation number is 53R0PQMZ . Is there anything else I can help you with? Sentence8: Your train booking at 19:54 was successful, the total fee is 38.4 GBP payable at the station. Your Reference number is : W0FCJ48S . Is there anything else i can help you with? Sentence9: The area does not matter, but it should have a 4 star rating. Sentence10: Great. Let me know if you need any additional help. Sentence11: Yes, please book it for 3 people Sentence12: Please book for 3 people for 5 nights, starting from Monday. Sentence13: The alexander bed and breakfast fits your needs. Would you like me to book a room for how many days and guests/ Sentence14: Which day and time would you like this for? Question: Who has spoken the sentence 10? (A) User (B) System
Answer: (A) User