Teacher:You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Teacher: Now, understand the problem? Solve this instance: Sentence1: No, that settles everything! Thank you. Sentence2: I have 5 train options leaving from Bishops Stortford from Cambridge that arrive before 08:30. Would you prefer to travel on Saturday, Monday, or Friday? Sentence3: Thanks, can also get me information on a train departing from Bishops Stortford and arriving by 08:30. Sentence4: Could you give me a departure time and travel time for that train? Sentence5: Okay, you're all set! Your reference number is: 4AU76U6Y . Sentence6: I need that train on Monday please. Sentence7: I'm looking for a cheap place to stay in the north, what kind of options can you give me? Sentence8: Worth house has a 4 star rating and wifi yes. Sentence9: Please book it for 5 people and 4 nights starting from monday. Sentence10: TR0532 departs at 07:29 and arrives by 08:07. Would you like me to book it for you? Sentence11: Is there anything else I can help you with? Sentence12: I would like the one with the 4-star rating please. Does it include free wifi by chance? Sentence13: Not at this time. Thanks for your help. Sentence14: There are 2 guesthouses available. One is 0 stars and the other is 4 stars. Which do you prefer? Sentence15: Thank you for contacting us, have a nice day. Sentence16: Train TR0532 fits your criteria. Would you like me to go ahead and book that for you? Question: Who has spoken the sentence 9? (A) User (B) System
Student:
Answer: (B) System