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: Okay. Glad I could help. Enjoy your dining experience. Sentence2: No, that's all I needed. Have a nice day. Sentence3: Is one of them cheap? Sentence4: I have listings for two. What price range are you looking for? Sentence5: I have 3, charlie chan, rice house or golden house. Would you like me to book one for you today? Sentence6: Thanks so much. Have a great day! Sentence7: Yes, La Raza is a cheap priced Spanish restaurant in the centre. Would you like me to make a reservation for you? Sentence8: Were you able to find anything? Sentence9: Yes, please make a reservation for Thursday at 16:15. There will be 7 of us. Sentence10: Yes I will look for different restaurant. Sentence11: I want to find a place serving spanish food in the centre of town. Sentence12: Okay yes pick one, perhaps the Golden House. Sentence13: Can you look for chinese restaurants please. Sentence14: Thank you for using our service, and enjoy your time in Cambridge! Sentence15: The booking was successful. Your reference number is C3NR2DW2 . Is there anything else I can help you with today? Sentence16: Could you please check for a different restaurant in the same area and pricerange. Sentence17: We do not have another Spanish restaurant. Would you like chinese or italian perhaps? Sentence18: I was unable to book this restaurant. would you like to try another one? Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System