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: The TR3544 leaves at 19:50 and arrives at 20:07. Would you like to book it? Sentence2: I am leaving from cambridge and going to ely and I need to leave after 19:30. Sentence3: Where are you going to and what time would you like to leave? Sentence4: Ah, yes. The Acorn Guest House is moderately priced and located in the north. It has a 4 star rating and offers both free internet and parking. Sentence5: I am looking for the acorn guest house. Sentence6: How many people do you want to purchase tickets for? Sentence7: Thank you. Can you also find a train that leaves on sunday and departs from cambridge. Sentence8: its phone number is 01223353888 Sentence9: yes book it for me please Sentence10: Sounds perfect. What is the phone number? Question: Who has spoken the sentence 8? (A) User (B) System
Output:
Answer: (A) User