Definition: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Positive Example 1 -
Input: Sentence1:i need a place to dine in the center thats expensive Sentence2: I have several options for you; do you prefer African, Asian, or British food? Sentence3: Any sort of food would be fine, as long as it is a bit expensive. Could I get the phone number for your recommendation?Question: Who has spoken the sentence 2? (A) User (B) System
Output: Answer: (A) User

Positive Example 2 -
Input: Sentence1: Guten Tag, I am staying overnight in Cambridge and need a place to sleep. I need free parking and internet. Sentence2: I have 4 different options for you. I have two cheaper guesthouses and two expensive hotels. Do you have a preference? Sentence3: No, but I'd really like to be on the south end of the city. Do any of those fit the bill? Sentence4: Sure. Does price matter? We can narrow it down and find exactly what you need. Question: Who has spoken the sentence 4? (A) User (B) System
Output: Answer: (B) System

Negative Example 1 -
Input: Sentence1: I am looking for a hotel named alyesbray lodge guest house. Sentence2: i have their info, what would you like to know? Sentence3: I would like to book a reservation for it. Can you help me with that? Sentence4: I sure can. First, I will need to know when you want your stay to begin and how many days you'll be staying. Also, how many people will be staying? Question: Who has spoken the sentence 1? (A) User (B) System
Output: Answer: (A) User

Negative Example 2 -
Input: Sentence1: Hi there! Can you give me some info on Cityroomz?. Sentence2: Cityroomz is located at Sleeperz Hotel, Station Road in the Centre area. It is a moderatley priced hotel with a 0 star rating. Would you like to book a room? Sentence3: Yes please. I need it for 7 people for 3 nights starting on tuesday. Sentence4: How many days would you like to book it for? Question: Who has spoken the sentence 4? (A) User (B) System
Output: Answer: (A) User

Now complete the following example -
Input: Sentence1: In what area would you like to stay? Sentence2: I have 2 options in the south. Both offer free wifi and parking. The Bridge Guest House is 3-star rated. The other is Aylesbray Lodge Guest House which has 4-star rated. Sentence3: You have helped me tremendously. Thank you! Goodbye! Sentence4: Is it a guesthouse? I would prefer a guesthouse. Sentence5: Yes, I am looking for places to go in the southern part of town. Sentence6: Yes, there are 14. Which area were you looking for? Sentence7: OK, then what about the moderate price range? Sentence8: I also need a really expensive place to stay. Sentence9: May I recommend University Arms Hotel, in the centre city? It has four stars, free wifi & parking, and is quite luxurious. Would you like to make a booking there? Sentence10: That sounds good. Can you tell me the entrance fee and phone number? Sentence11: Would you be interested in a museum? The Byard Art Museum is located at 14 King's Way in the south. Sentence12: Sounds good. Can I book a room for one person for two nights starting tuesday? Sentence13: Area does not matter. I do need free wifi. Sentence14: Can you get me a car to pick me up from the museum and take me to the guest house? Sentence15: Booking was successful, the reference number is AQIMZ6OO . Anything else I can do for you? Sentence16: OK, a grey honda should be picking you up at the museum, the contact number is 07694082426. Is there anything else I can help you with? Sentence17: Sure! What time would you like to leave the museum? Sentence18: It was my pleasure! Enjoy your stay! Sentence19: There are no guesthouses matching your requirements. Sentence20: That's all for today. Thanks for your help. Sentence21: Sure thing! It has free admission and their phone number is 01223464646. Is there anything more I can help with today? Sentence22: I am looking for a place in the south side of town. Sentence23: Thank you so much. Have a great trip! Sentence24: I want to leave the museum by 7:30. Question: Who has spoken the sentence 17? (A) User (B) System
Output: 


Answer: (B) System