Q: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Sentence1: Are there any good eastern European restaurants in the centre? Sentence2: Chinese is always a good standby when in doubt, lets look for a chiense place. Sentence3: Your welcome. Have a good day. Sentence4: Do any of them serve eastern European food? Sentence5: Reference number is : JKLWFR30 . Is there anything else? Sentence6: Jinling Noodle bar is a great moderately priced chinese restaurant in the centre. Would you like me to make reservations for you? Sentence7: Yes, it is a nice college in the city centre, located on Saint Andrew's Street. Sentence8: Can you get me information on a attraction called emmanuel college? Sentence9: Is there anything else I can assist you with? Sentence10: I'm afraid not. Would you like to look for a different type of cuisine? Sentence11: There are several, do you have a price range in mind? Sentence12: Thank you, goodbye. Sentence13: Moderately priced please. Sentence14: Okay thank you. That was all I needed to know. Sentence15: There are many places to dine Do you have any preferences ? Sentence16: Yes please make that for 4 people at 15:00 on a Sunday. Sentence17: There are 8 restaurants in the centre that serve European food. If you want to go with something cheap, I would suggest the River Bar Steakhouse and Grill. Sentence18: what about eastern european food? Question: Who has spoken the sentence 10? (A) User (B) System
A:
Answer: (A) User