You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Q: Sentence1: Is there a 4 star guesthouse in the north that is in the moderate price range instead? Sentence2: There are seven of them. I can recommend the archway house if you would like It has free internet and parking. Sentence3: I need one in the north and a guesthouse. Sentence4: to what destination? there is one to London Liverpool street arriving at 09:27, will that do? Sentence5: I am looking for an expensive 4 star hotel. Sentence6: Hold on, is there any trains leaving Cambridge that arrives by 11:30? Sentence7: You're welcome. Have a good day. Sentence8: Oh great thanks, that's all I needed! Sentence9: I have 2 options for expensive hotels. One at kingfisher way, huntingdon. The other is at regent street. Would you like to consider one of these? Sentence10: There are no guesthouses in the north that meet your criteria. Can I check for hotels or another area perhaps? Question: Who has spoken the sentence 7? (A) User (B) System
A:
Answer: (B) System