Definition: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Input: Sentence1: Thank you and enjoy your stay here in our lovely city! Sentence2: Nandos is a cheap Portuguese restaurant in the south, would like more information about it? Sentence3: Okay, you are booked, with reference number 58HYUWPB Sentence4: I need to book for Friday for 5 nights. Sentence5: I'm looking for a restaurant in the south serving christmas food. Can you help me? Sentence6: I have booked a red volkswagen for you. The contact number is 07404379938. Sentence7: I have one option for you. It is rosa's bed and breakfast. Would you like a reservation? Sentence8: Yes, can you help me with a cheap guesthouse in the south of town? Sentence9: No, I'd really like cheap Christmas food. How about in a different area? Sentence10: What about a place serving Portuguese food? Sentence11: There will be 7 of us. Sentence12: Yes, could I get the postcode? Sentence13: How many people will be staying? Sentence14: Sure, I can help you with the booking? On what day will you be coming in? Sentence15: Yes, please book the reservation and provide a reference number. Sentence16: I don't have anything that serves Christmas food and is cheap. Sentence17: Postcode cb17dy. Their phone and address is 01223327908, Cambridge Leisure Park Clifton Way. Can I help you with anything else? Sentence18: Thanks you have been great! Sentence19: Sorry, I couldn't find any christmas restaurants in the south. Want to try a different kind of food? Sentence20: I also want to book a taxi to leave Rosa's bed and breakfast by 15:45. I would like the contact number and car type. Question: Who has spoken the sentence 5? (A) User (B) System
Output:
Answer: (B) System