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: No, you have been very helpful. Goodbye. Sentence2: Please book me a taxi leaving the History of Science Museum back to the Gonville Hotel. I need to leave the museum by 17:45. Sentence3: Yes, I'm also like to get away from it all and stay at a place in the centre with no internet. Sentence4: Their phone number is: 01223330906. Their address is: free school lane. Can I help you with anything else? Sentence5: 4 nights starting Friday for just myself. If you could book that and provide me a reference number that would be great! Sentence6: Okay, your room is reserved. The reference number is 7OB0YMGO . What else can I help you with? Sentence7: Of course. A blue Volvo will be picking you up at the Museum. The contact number is 07883239708. Will there be anything further? Sentence8: I am looking for an entertainment attraction in the centre of town. Sentence9: Yes, if you could do that. Sentence10: Unfortunately, I was unable to find something in entertainment in the centre of town. Can I help you in finding something in a different area or category? Sentence11: Then the Gonville Hotel is the place for you. Would you like a room reserved for you? Sentence12: I'm sorry, there is nothing in the centre without internet. Would you like to try the North side of town perhaps? Sentence13: The History of Science Museum sounds interesting. Could you please send me the phone number and address? Sentence14: There are 11 museums in the centre, all of which are free. There are art galleries, an archaeology museum, and a history of science museum. Sentence15: Could you tell me about the types of museums in the Centre? Sentence16: No. I would like to stay in the same area as the attraction. It doesn't have to have internet but it does need to be expensive and with 3 stars. Sentence17: Thank you. Goodbye. Sentence18: How many nights and starting when? Question: Who has spoken the sentence 14? (A) User (B) System
Output: 


Answer: (A) User