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: I would prefer moderately priced. What are the two options I have? Sentence2: You are very welcome. Have a good evening. Goodbye. Sentence3: It is located on jesus lane in the city center. Sentence4: Booking completed! Your contact number is 07835118695 and the car type is a black audi. Can I help you with anything else? Sentence5: I would happily book the restaurant but I need you to respond to my previous inquiry about your price preference Sentence6: I have 3 great places that serve turkish food in the centre of town. I have 2 that are moderately priced and 1 that is expensive. Do you have a preference? Sentence7: The phone number is 01223452587 and the postcode is cb58bs. Sentence8: There are no eastern european restaurants in the centre. Perhaps you would like chinese instead? Sentence9: Yes, All Saints Church is located in the central area. Is there anything else I can help you with? Sentence10: all saints church is pretty popular for architecture lovers. Sentence11: No, it is an architectural attraction. Would you like me to look for a concert hall for you? Sentence12: The two options are Anatolia and Efes Restaurant. Do you have a preference? Sentence13: I need it on Friday, for 6, at 12:15. Sentence14: The Booking was successful. The table will be reserved for 15 minutes. Reference number is : 71YJN5ID . Sentence15: Well, I guess I would like to try turkish food if you have that. Sentence16: Where is this located? Sentence17: I am in need of some entertainment. Can you recommend anything? Sentence18: I actually want entertainment type of place. Sentence19: Is it located in the centre? If none exists, could you find one that is a type of concerthall? Sentence20: Anatolia sounds good. Please book it for 6 people on Friday at 12:15 Sentence21: Yes, what is the phone number and postcode for All Saints Church? Sentence22: How about cherry hinton hall and grounds? Sentence23: Sounds great, I'd like a taxi to go between the two that arrives at the restaurant by the booked time. Sentence24: I think that should do it. Thanks for your help today! Sentence25: Is All Saint Church an entertainment attraction? I'm also looking for a place to dine in the centre that serves eastern european food in the moderate price range. Sentence26: I also need a taxi to commute between the locations. Question: Who has spoken the sentence 19? (A) User (B) System
Output: 


Answer: (B) System