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: Thank you for contacting Cambridge TownInfo Centre. Enjoy your trip! Sentence2: What would you like to know? Sentence3: Hi, I'm looking for a theatre in town. Sentence4: How about trying the booking for 2 nights instead? Sentence5: I have several theatres in town; most are in the center and there's one on the south side. Do you have a preference? Sentence6: Thank you. That's all I needed today. Sentence7: That's all, I also need some info on the aylesbray lodge guest house. Sentence8: The booking was successful. Your reference number is VEKFOWW6 . May I help you with anything else today? Sentence9: I just need to book it for 5 people for 3 nights starting wednesday. Sentence10: I want to leave the hotel by 23:45, please. I will need the contact number and car type as well. Sentence11: Not particularly. Which do you recommend? If you can provide an address, and info on entrance fees for your favorite, that would be great, thanks. Sentence12: Booking was unsuccessful. Can I book it for another day or for a shorter stay? Sentence13: There is a nice theatre in the centre called Mumford Theatre at Anglia Ruskin Enterprise, East Road. There are no entrance fee's listed. Would you like the phone number? Sentence14: Certainly. When do you want to leave by? Thanks. Sentence15: I also need a taxi that will get me from the hotel to the Mumford Theatre. Sentence16: Look for a red skoda at 23:45. Contact number is 07203451236 Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User