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: before we get to your restaurant inquiry could you give me some information on your hotel stay? When would you be staying? How many days? How many would be joining you? Sentence2: The ashley hotel 74 chesterton road. Would you like to book a room? Sentence3: I also need free parking included and I would like it to be a hotel. Sentence4: Thank you for choosing Cambridge TownInfo Centre! Have a nice trip! Sentence5: How about a British one then? Sentence6: I also need a place to dine serving modern american food in the centre. Sentence7: Yes I have done that for you and your reference number is BKV4ED6B . Sentence8: I need lodging in Cambridge that has free parking. I don't need internet, though. What have you got? Sentence9: Yes please. Please book a table for 5 at 12:30 on friday. Sentence10: There are many moderate restaurants in the centre but no American restaurant. Would you be interested in Asian, Brittish, or chinese? Sentence11: We have 29 entries that match your criteria. Do you have any other preferences? Sentence12: I have gone ahead and booked that Taxi for you. The Taxi will be a blue Volkswagen and the Taxi contact number will be 07081400797. Sentence13: The Ashley hotel does not have internet is that correct? Sentence14: Yes, I would like to book a room. Sentence15: The Ashley hotel does have free wifi. Sentence16: Oh, that's great! What's the address for The Ashley? Sentence17: Actually, I will go ahead and book myself later. But, if you can help me find a moderately priced restaurant in the centre of town that would be great. Sentence18: Thank you. I also need to get a taxi to go between the two places. Sentence19: When would you like your reservation to start, how long would you like to stay, and how many are in your party? Sentence20: The Oak Bistro is located at 6 Lensfield Road. Would you like for me to book a table for you? Sentence21: Great thanks! That's all I needed. Sentence22: The ashley hotel in the north has free parking. Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System