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: how about italian? Sentence2: I am also looking for a hotel in the same area of the restaurant Sentence3: Are there any restaurants that serve bistro food? Sentence4: Yea! Please book a table for 2 people at 15:00 on Thursday. Sentence5: Does it have free parking? Sentence6: Sure, there are two such restaurants. How about Pizza Express, at Regent Street City Centre? Would you like to book a table? Sentence7: The Gonville Hotel is in the expensive range but is located in the Centre. Sentence8: Hello, I am traveling to Cambridge and I'm looking for some local restaurants. I would like to find some located in the Centre and of moderate price. Sentence9: That sounds great. Can you provide the contact number for the taxi? Sentence10: That's all. Thanks. Sentence11: Can you try 14:00? Sentence12: Yes it does! Shall I book that hotel for you? Sentence13: I don't really care about price range, but I'd like to have free parking. Sentence14: I have you booked leaving at 13:45 and arriving at 14:00. Your car is a black audi. Sentence15: That time is not available, would you like to book another day or time slot? Sentence16: Thank you as well and have a wonderful day! Sentence17: Your Booking was successful.Your Reference number is : K9JGOOGY . Sentence18: There are no bistro style places that meet your criteria, would you like another style of food perhaps? Sentence19: Can I also book a taxi to get from the restaurant to the hotel? We want to make our dinner reservation. Sentence20: I have several options. Do you prefer a certain price range so that we can narrow down the options? Sentence21: We have a lot of locations to chose from. What type of food would you like? Sentence22: Please. Book it for 2 people on thursday, for 3 days. I'll need the reference number for that as well. Sentence23: Yes I was able to make you a reservation at the pizza express on thursday at 14:00 for 2 people. Your reference number is UN9ONONE . Sentence24: Certainly, the number is 07937202537. Is there anything else I can help you with? Question: Who has spoken the sentence 12? (A) User (B) System
Output: 


Answer: (A) User