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: I was looking for Chinese food. Sentence2: You can try sesame restaurant and bar at 17 Hills Road City Centre. The phone number is 01223358899. Would you like to make a reservation? Sentence3: We have several restaurants serving Chinese food in town. What price range and part of town would you prefer? Sentence4: Any fancy restaurants in town? Sentence5: Alright great, that's all I need thank you! Sentence6: You are very welcome. Enjoy your dinner. Sentence7: I made those reservations and your reference number is DL52IYMD . Sentence8: Yes, please book it for 2 people on Sunday at 17:15. Sentence9: I would like expensive Chinese food located in the centre of town please. Sentence10: We have tons of options! Whats your favorite type of food? Question: Who has spoken the sentence 1? (A) User (B) System
Output:
Answer: (B) System