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: I have train TR8903 that leaves at 18:40 and will arrive in Cambridge at 21:23. Would that interest you? Sentence2: Yes please book me for one ticket. Sentence3: Absolutely. Where are you coming from? Sentence4: Are you going to stay in a specific area of town? Sentence5: Booking was successful, the total fee is 75.09 GBP payable at the station . Reference number is : KHBLJGHN . Is there anything else I can do to assit you today? Sentence6: Also looking for a guesthouse in the cheap price range. Sentence7: I'm departing from birmingham new street. Sentence8: Is there a train I can take to cambridge that leaves after 18:00? Question: Who has spoken the sentence 7? (A) User (B) System
Student:
Answer: (B) System