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: Certainly I can help with that, will you destination be from allenbell? Sentence2: I have booked a taxi for you. A grey toyota with the contact number 07790143125. Is there anything else you need? Sentence3: Thank you, please enjoy your stay here in Cambridge. And have a wonderful day. Sentence4: Well, I also need to book a taxi. I want to leave the hotel by 19:30. Sentence5: I'm also looking for a museum in the east area. Can you help me find one? Sentence6: Yes! Can I have the postcode for it? Sentence7: It is a 4 star hotel that is cheap, and in the east of town. It is a guesthouse type and phone number is 01223210353. Sentence8: Can you give me some information on the Allenbell? It's a hotel. Sentence9: No. Thank you very much. Sentence10: I need it for 5 people and 5 nights starting from sunday. I will also need the reference number. Sentence11: Yes, the Cambridge Artworks is a wonderful museum in the east. Would you like more information? Sentence12: I want to go to the Cambridge Artworks. Sentence13: I have successfully booked it for you. Your reference number is I44610JK . Sentence14: Sure, the postcode for cambridge artworks is cb13ef. Do you need any more information? Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System