You will be given a definition of a task first, then some input of the task.
You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Sentence1: Yes, they have free wifi. Do you need anything else? Sentence2: TR2771 leaves at 13:29 and arrives at 14:07. Would this one work for you? Sentence3: Can you tell me if they have free internet? Sentence4: There are multiple trains leaving that match your request. When is the earliest you would want to leave? Sentence5: Can you find a hotel named Worth House for me? Thanks. Sentence6: I will be going from Cambridge to Bishops Stortford. Sentence7: Sure, it is a guesthouse in the north. Would you like me to book a room for you? Sentence8: There are many trains moving on Tuesday, can I get your preferred point of departure and arrival? Sentence9: I would also like a train that leaves on Tuesday and arrive by 14:30. Sentence10: I need to arrive by 14:30 I don't have a preference on departing time. Question: Who has spoken the sentence 1? (A) User (B) System
Output:
Answer: (B) System