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

Sentence1: Feel free to contact us anytime in the future. Sentence2: Where will you be coming from? Sentence3: Hi there. Can you tell me if you have any parks in the east part of town? Sentence4: Thanks you too. Sentence5: I need to leave london liverpool street and get there by 18:30 Sentence6: The TR5863 train will get you to Cambridge by 17:07, would you like to make a booking? Sentence7: Will you be needing one or more seats on that trip? Sentence8: Actually, I don't need it booked. Can you tell me what time it leaves? Sentence9: Yes we have cherry hinton water play park. Sentence10: Yes, that will be fine. Sentence11: Yes, they have free admission. Their phone number is 01223446100. The postcode is cb18dw. Is there anything else I can help with today? Sentence12: You're welcome. Have a nice day. Sentence13: I am looking for a train going to Cambridge on Saturday. Sentence14: Yes, that sounds like someplace for me to visit. Is it free? Also, I'll need the postcode and phone number. Sentence15: Train TR5863 will be departing at 15:39. Is there anything else I can help you with? Sentence16: You would be on the train for 88 minutes and it is 13.28 pounds. May I assist you with anything else today? Sentence17: no, thank you. that is all. Sentence18: What is their price and the travel time? Question: Who has spoken the sentence 8? (A) User (B) System
Answer: (A) User