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 also need a taxi to commute between the two places Sentence2: I booked you a taxi! It's a Red BMW and the contact number is: 07337581816. Sentence3: Perfect. I'm also looking for a moderately priced swedish restaurant. Sentence4: Can you find a restaurant in the north? Sentence5: I'm looking for a place to stay, in the north, that offers free parking. Sentence6: There is a Chinese restaurant and an Indian restaurant in the north. Both are moderate priced which do you prefer? Sentence7: Ok great and how many people will the table be for? Sentence8: I'd prefer a guesthouse instead of a hotel, if possible. Sentence9: I would like reservations at 13:15. Sentence10: Sure, what time would you like the reservation for? Sentence11: I reserved a table at the nirala, your reference # is 6KLPX1T4, anything else? Sentence12: Acorn guest house is a guesthouse in the north, moderately priced and 4 stars. Would you like to make a reservation? Sentence13: We have 11 different options, any other features that you are looking for? Sentence14: There will be 5 of us for Thursday. Sentence15: Absolutely, your Booking was successful. Reference number is : 9AN6IOSF . Sentence16: The indian place could work. Sentence17: Yes, please. Can you book a room for Thursday for 5 people, 4 nights? Sentence18: no, but i want free parking. Sentence19: I'm sorry there are no matching results. Sentence20: Did you have a particular price range in mind? Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System