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

Sentence1: Yes, Hi! I am looking for a hotel in the tampa bay area. Sentence2: Thank you for all your help. Sentence3: You are welcome. Thank you for calling. Sentence4: I'd like somewhere to go in town. Something in the centre please. Sentence5: You did not read the directions of this hit. There is no Tampa bay area. Please read the directions next time. Sentence6: I would like to leave on Sunday and arrive by 18:45. I need tickets for 8 people. Could you make the reservation and provide a reference number? Sentence7: 8 tickets please, and I will need the reference number. Sentence8: I can get you on TR0523 arriving at Stevenage by 14:10. How many tickets will you need? Sentence9: Anything you recommend. I just need the entrance fee, attraction type and phone number. Sentence10: i'm sorry, dude. i'm from florida so i'm not very smart. i'm trying to get from cambridge to stevenage. Sentence11: Little Saint Mary's Church is an architecture attraction with no entrance fee. Their phone number is 01223366202. Sentence12: If you would like to take a train from Cambridge to Stevenage there is one leaving Friday at 05:21 arriving by 06:10. Does that work? Sentence13: Is there anything in particular you're interested in doing/seeing? Sentence14: Your booking was successful. The total fee is 81.92 GBP which can be paid at the station. The reference number is 1A9JYQS7 . Question: Who has spoken the sentence 8? (A) User (B) System
Answer: (A) User