Detailed Instructions: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Q: Sentence1: I need a room, can you help? Sentence2: You're welcome. Have a great stay! Sentence3: There are 6 choices, any pricing preferences? Sentence4: i got a long list. it will help if you knew the king of food you want Sentence5: I would like it to be a guesthouse. Sentence6: I will book that for you now. Sentence7: thank you that is all I need goodbye Sentence8: The allenbell is a guesthouse in the east in the cheap price range and it has a 4 star rating. Would you like to reserve a room? Sentence9: Yes, I would like to book for 8 people for 4 nights starting Tuesday. Sentence10: I would like something in the east with 4 stars. Sentence11: Ok, I was able to make a booking. Your reference number is XVPDCMK9 Sentence12: Which area would you like to be in? Sentence13: Please do so. Sentence14: Well I want a hotel not food. Question: Who has spoken the sentence 7? (A) User (B) System
A:
Answer: (B) System