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 recommend either Backstreet Bistro or The Slug and Lettuce. Sentence2: Sure, there are plenty of restaurants like that. Did you have a certain type of food in mind? Sentence3: I don't have a phone number for them, but the address is 34 - 35 Green Street, postal code cb23ju. Is there anything else I can do today? Sentence4: Thank you so very much that is exactly what I was looking for! Thank you and have a great day. Sentence5: Is there anything listed as simply "entertainment" in the center? Sentence6: I am actually looking for a lively gastropub. Sentence7: I can definitely help you. Do you want a boat, cinema, college, or maybe a museum? Sentence8: Hello, I'm looking for a restaurant that is expensive and located in the centre. Sentence9: You're welcome. Have a great time! Sentence10: Please try a college, instead. Could I get the postcode and phone number? Sentence11: I am also looking for an entertainment attraction in the same area of town that the restaurant is in, can you help with that? Sentence12: There are no entertainment venues in Centre unfortunately. I can either look for a different venue type or another part of town if you like. Sentence13: How about downing college on regent street, cb21dq? Their phone number is 01223334860. Sentence14: The Slug and Lettuce sounds interesting. Can I have the postcode, address, and phone number please? Question: Who has spoken the sentence 11? (A) User (B) System
Output: 


Answer: (B) System