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 actually need it for 3 nights Sentence2: Thank you so much that was all I needed. Sentence3: There are 44 in the centre of town. Could we narrow it down to architecture, college, museum, or theater? Sentence4: Sure. Do you have any other criteria? Sentence5: We have alexander bed and breakfast and el shaddai, both are guesthouses any preference? Sentence6: Thanks! I'm also looking for somewhere to stay while I'm in town. Sentence7: Definitely. Did you just want that for one day? Sentence8: What is one of your favorites? I would need the phone number and type of attraction. Sentence9: Your reservation for 2 people at the alexander bed and breakfast this saturday for 4 nights was successful. Your Reference number is : Q0IABNP7 . Sentence10: Great! Thank you for calling the Cambridge TownInfo center. Have a great trip! Sentence11: I actually prefer the cambridge university botanic gardens. They're classed as a park, and their number is 01223336265. Sentence12: I am visiting the centre area and need to find an attraction to visit. Sentence13: Yes, it needs to be in the same area as the attraction, cheap price range, free wifi but doesnt need to have free parking. Do you have anything like that? Sentence14: Alexander Bed and Breakfast sounds nice. Can you make a reservation for two for Saturday? Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System