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

Sentence1: No, thanks. I do need to look for a train, too. Can you help me? Sentence2: We have many trains that match your request, is there a certain time you need to arrive by? Sentence3: Yes, can you tell where you are going and coming from please? Sentence4: You are welcome! Can I help you book that? Sentence5: I have booked your party of 4 on the TR3262 departing Cambridge for Broxbourne on Thursday at 11:01. Your reference is AGMKNY6Z . Can I help you more today? Sentence6: I need to leave from Cambridge and go to Broxbourne on Thursday. Sentence7: Ok, how many tickets would you like? Sentence8: Hi. I am looking for information about a hotel called Home from home. Sentence9: No any of them are fine. Please give me the reference number too. Sentence10: You are welcome. Have a good day. Sentence11: I need tickets for 4 people. I need something that leaves after 10:45 as well. Sentence12: No, thanks, that was all I needed. Sentence13: I can help with that. It is a guesthouse located in the north. They are moderately priced. It has a 4-star rating and offers free parking and wifi. Sentence14: i would like to go there soon, so thank you for the information Question: Who has spoken the sentence 6? (A) User (B) System
Answer: (A) User