Given the task definition and input, reply with output. You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Sentence1: How about a chinese restaurant? Sentence2: I'm so sorry, but I wasn't able to make that reservation for you. May I try on another day or at another time? Sentence3: I was able to get you that reservation on Wednesday. The table will be reserved for 15 minutes prior to your arrival. Sentence4: You as well. Thanks for calling. Goodbye. Sentence5: No, I don't need that anymore. Thanks. Have a great day! Sentence6: Absolutely, the reference number is W92C2Z47 . Is there anything else I can help you with today? Sentence7: The hotpot sounds like a good idea. Need a reservation? Sentence8: May I have the reference number please? Sentence9: Yes, let's shoot for the same thing but on Wednesday instead, okay? Sentence10: i want a place for dinner and serves a mexican food,where can i find it?please first pick for me a taxi to that place should be to the north. Sentence11: Yes, please. 6 people at 11:30 on sunday. Sentence12: That was all. Thanks Sentence13: Did you say you also needed a taxi to the restaurant? Sentence14: Unfortunately, I was unable to find a Mexican restaurant in the north. Is there anything else I can help you with? Question: Who has spoken the sentence 2? (A) User (B) System
Answer: (A) User