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: Well, I'm also looking to stay somewhere for a bit. I need someplace with free wifi and parking. Sentence2: Would you prefer cheap or expensive? Sentence3: Booking was successful at the cambridge belfry, Reference number is : TNJXRQR5 . Can I assist you with anything further? Sentence4: Looking specifcally for a hotel, can you book me for 7 people for 5 nights on friday Sentence5: That is everything I needed. Thanks! Sentence6: Certainly! It is an international restaurant in the Centre of town. It is moderately-priced. It is at the Crowne Plaza Hotel, at 20 Downing Street. Would you like a reservation? Sentence7: I'd like to find out more about the bloomsbury restaurant Sentence8: Yes, there are a number of hotels with free parking and WiFi, what area do you wish to stay? Sentence9: Yes please, Friday at 18:15 for 7 people. Sentence10: There are four choices. Does it matter whether it is a hotel or guest house? Or any other preferences? Sentence11: I don't have a preference. Sentence12: Booking was successful. The table will be reserved for 15 minutes.Reference number is : G0X4NIAA . is there any way i can be of help to you? Sentence13: I would like a hotel in the western part of town. Sentence14: Thank you for using the Cambridge TownInfo centre service! Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System