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: great! what area of town are you thinking of? Sentence2: I've got 9 guesthouses in that price range. Do you need internet and/or parking? Sentence3: 154 chesterton road Sentence4: Unfortunately, there aren't any in that area. How about another location? Sentence5: I'm not sure yet. I'm really researching right now. Can you please recommend a guesthouse in the north in the moderate price range? Sentence6: okay, I can help you with that. When are you planning your stay? Sentence7: I have found 7 hotels now that match your criteria for parking and internet. Would you like me to choose on for you? Sentence8: What day do you need the train? What is your destination? Sentence9: how about one that is in the type of museum.and make Make sure you get address Sentence10: Kettle's yard is museum in the west part of town. It is located on castle street. Sentence11: No but I do need to know if they have internet, free parking, and the address of the guesthouse of your choice, thanks! Sentence12: I'd like it to be a guest house in the north. Sentence13: Yes, please, I would appreciate that. Sentence14: I recommend Acorn Guesthouse. They are in the moderate price range and have 4 stars. They offer both free internet and parking. May I reserve you any rooms? Sentence15: Thank you, that is everything, sorry for being so annoying in the process. Sentence16: Yes, please tell me your favorite guesthouse in the north and let me know their address and whether they offer free Internet and parking. Sentence17: Ok great, and how many people and nights? Sentence18: I would like to book a train. Sentence19: I also need a moderate priced room. Sentence20: I actually don't need a room. I just need the address please. Sentence21: I am sorry I mean I want a nightclub to go in the wast side of town. Sentence22: No worries at all. Thank you for using the Cambridge TownInfo centre. Enjoy your stay. Question: Who has spoken the sentence 21? (A) User (B) System
Output: 


Answer: (B) System