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: what kind of entertainment are there in centre? Sentence2: I have your taxi booked, it is a black toyota and the contact number is 07523319524. Can I help with anything else? Sentence3: Thank you! I will also need a taxi to commute between the two places. Sentence4: cambridge university botanic gardens is in the centre area. I'm sorry I couldnt find it before. Can I get you more info on that? Sentence5: Ok, it's booked! Your reference number for the reservation is GZ16XA39 . Sentence6: There isn't any entertainment in the centre would you like to try another area or another type of attraction? Sentence7: I am looking for something in the centre. Sentence8: I'm not showing anything in the centre. Is there another area you're interested in visiting, or a different type of attraction? Sentence9: The address there is bateman street. Sentence10: Great! I'm also looking for something fun to do in town. Can you help me find something to do? Sentence11: Could you provide me with the address, please? Sentence12: Sure, do you want me to make a booking or do you need more information? Sentence13: From the park to the restaurant, I would like to get there by the booked time. Sentence14: Ok, how about a park in the centre. Are there any? Sentence15: Your welcome. enjoy your stay in Cambridge. Sentence16: We have many great attractions here. Is there some place specific you would like to go? Sentence17: Ok, is there a specific attraction type you are interested in seeing? Sentence18: I'd be happy to book a taxi for you. Where would you like to depart from? Sentence19: I am not finding any parks. Sorry. Sentence20: I would like to book a table for 3 people at 14:30 on sunday. I will need the reference number as well. Sentence21: I am looking for an entertainment attraction preferably. Sentence22: Just find me a park anywhere then. Sentence23: No, thank you. I have everything I need at this time. Sentence24: Hi! I am attempting to find a restaurant in Cambridge called Traveller's Rest. Do you know of it? Question: Who has spoken the sentence 22? (A) User (B) System
Output: 


Answer: (A) User