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 have you booked in a yellow Honda, you can contact them at 07910205264. Can I help you with anything else today? Sentence2: There are three restaurants in the centre that serve European food with an expensive price range. Can I make a reservation for you at one of them? Sentence3: There are three different places: Eraina, Michaelhouse Cafe and Darrys Cookhouse and Wine Shop. Which would you like me to book? Sentence4: book a table for 7 people at 14:45 on saturday, Make sure you get the reference number Sentence5: I am looking for a restaurant in the centre of town Sentence6: I'm looking for European food. This is a special dinner, so something expensive. Sentence7: You can pick. I need reservations for 7 people on saturday at 14:45. Sentence8: Great. I need to find a guesthouse that has free wifi and free parking, the better half is so cheap. Sentence9: Eraina is perfect for your special dinner. Your table will be held for 15 minutes after your reserved time of 14:45. Your reference number is YQXGPLLY . Do you need anything else? Sentence10: Yes, I need a taxi to commute between dinner and the hotel. Can you please help me with the contact number and car type? Sentence11: arbury lodge guesthouse in the north is great. They are moderately priced, I can book you a room how many people are staying and when are you checking in? Sentence12: I can go ahead and do that for you. What time will you be leaving the restaurant? Sentence13: The booking for 7 is entered under the reference number ZW3FVVQZ . May I help with anything else? Sentence14: Can you please recommend one and book it for 4 nights? Sentence15: That is all I need. Sentence16: The 7 of us will be arriving on Saturday and staying 4 nights. Sentence17: There are 69 places to eat in Centre. Do you have a specific type of food or price range you are wanting? Sentence18: Actually, I need to go from the hotel to dinner. I want to arrive at the restaurant by 14:45. Sentence19: Thank you for contacting us today. Have a nice day. Sentence20: that's just fine, i actually have 21 options for you! Question: Who has spoken the sentence 16? (A) User (B) System
Output: 


Answer: (A) User