Detailed Instructions: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Problem:Sentence1: How about the one that is in the type of guesthouse? Sentence2: Could you please specify a precise time you would like to leave. Sentence3: The phone number for A and B Guest House is 01223315702. The address and postcode is 124 Tenison Rd, cb12dp. It is a 4 star guesthouse. Sentence4: Can I have the information for the guesthouse that doesn't have free parking? I would like the phone number, postcode and star rating please. Sentence5: Early evening please. Sentence6: I'm also looking fore a moderately priced hotel that has free wifi on the east side. Sentence7: Close to arriving by 21:00. I need to book it for 8 people for a Saturday. Sentence8: Thank you for using our system! Sentence9: Thanks! I think that's all I need. Sentence10: TR6759 leaves Stevenage at 19:54 and arrives in Cambridge at 20:43. Would you like me to book it? Sentence11: I have many options available. May I have the departure site please? Sentence12: I'm sorry, there aren't any hotels that match your criteria. Would any other area, price, or internet availability be acceptable? Sentence13: There are 70 trains departing to Stevenage. What day would you like to leave? Sentence14: I have several trains that will arrive in Cambridge by 21:00 what time of day would you prefer to depart? Sentence15: Yes, I'd like 8 tickets please. May I also have the reference number? . Sentence16: I would like to leave on Saturday and would like to arrive by 21:00 to cambridge. Sentence17: I am departing from Stevenage. I need to book seats for 8 people to Cambridge on a Saturday to arrive by 21:00. Sentence18: There are 3 guesthouses available, 2 of them have free parking. Sentence19: I'm looking for a train to Stevenage, please. Sentence20: Your booking was successful. The reference number is IQC4RP3I, and the total cost will be 81.92 GBP. What else can I help you with? Question: Who has spoken the sentence 18? (A) User (B) System
Solution:
Answer: (A) User