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: Sorry, you'll need to be more clear on your departure site please. Is there a specific hotel you're looking for? Sentence2: Will that be to or from the club and what time? Sentence3: I want to leave the hotel by 05:00. Sentence4: Ballare, a beautiful new nightclub just opened up in the center. Entrance is just 5 pounds, would you like more information on Ballare? Sentence5: You are welcome have a great stay. Sentence6: Alexander Bed and Breakfast meets your requirements. Can I book a room for you? Sentence7: Any type will do, as long as its in the centre. Can you recommend something? Sentence8: i need places to go in town Sentence9: We have museums, colleges, and interesting architecture, as well as many other choices in the center of town. Sentence10: The postal code is cb23na and the address is heidelberg gardens, lion yard. Can I assist you further? Sentence11: Yes, sorry for the confusion. I want a taxi to pick me up at the hotel at 05:00 and my destination is Ballare. Please give me car type and contact number Sentence12: What did you have in mind? Sentence13: Yes, can I have their address with postcode? Sentence14: I am looking for a guesthouse if there is one? Sentence15: It seems like you are asking for a taxi. Where are you departing from and where is your destination, please? Sentence16: Do you happen to have any entertainment places in the centre of town to visit? Sentence17: I have 4 locations in the centre of town with free parking and WiFi. Would you like to book one? Sentence18: Something in the same neighborhood, and that has wifi and parking. Sentence19: Thanks so much you have been a great help to me. Sentence20: Yes, can I please have car type and contact number? Sentence21: Yes on Friday. I need a taxi too. Sentence22: Your all set a blue bmw will be picking you up at 5 the contact number is 07398420565, is there anything else today? Question: Who has spoken the sentence 19? (A) User (B) System
Output: 


Answer: (B) System