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: I want to get to Cambridge by 10:15. Sentence2: I definitely want italian food, please. Sentence3: I do not have any of that sort of food. Shall I try another? Sentence4: OK, would you like more info on clowns cafe to a booking? Sentence5: Great. I can help you with that. Where were you going to be departing from? Sentence6: Please reach out to us again, if we can be of further assistance. Good-bye. Sentence7: im happy i was able to help. gooday Sentence8: I need to book a train on friday Sentence9: That would be great, could you get me the phone number, address, and postcode please? Sentence10: No but I also need and expensive restraint in the center area. Sentence11: The TR2083 will take you from Bishops Stortford to Cambridge. It departs on Friday at 09:29 and you'll arrive in Cambridge at 10:07. Would you like me to book it? Sentence12: I am departing from Bishops Stortford. Sentence13: I'm confused, are you interested in Indian or Italian food? Sentence14: where are you wanting to go to? Sentence15: phone number, address and postcode please Sentence16: What type of food would you be interested in? Sentence17: Might I suggest clown's cafe? It's an expensive indian restaurant located in the centre. Sentence18: molecular gastronomy Sentence19: That is all thank you. Sentence20: Yes, please try Italian food. Sentence21: The clowns cafe is located at 54 King Street City Centre. Their postcode is cb11ln and they can be reached at 01223355711. Will that be all today? Sentence22: Good day to you as well. Again, thank you so much. Good-bye. Question: Who has spoken the sentence 1? (A) User (B) System
Answer: (B) System