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: Yes, book a table for 3 at 11:30 on the same day if you can. Sentence2: I need a place to stay. Something moderately priced, with free wifi. Sentence3: Does the Acorn Guest House also offer free parking? Sentence4: Yes please. I need a restaurant in the north, same price range as the hotel, and serves swiss food. Sentence5: The Nirala is a moderately priced indian restaurant in the north. Can I book you any tables? Sentence6: Can we try for one that serves Indian food instead? Sentence7: I like acorn guest house. Need a reservation? Sentence8: Booking was successful. The table will be reserved for 15 minutes. Reference number is : 1GD9Z858 . Sentence9: Booking was successful. Reference number is : PSNFSRQI . anything else i can help you with? Sentence10: yes would you reserve andd book it for me with a confirmation number ? Sentence11: We don't have any such restaurants in the north. Do you want to search for something different? Sentence12: Yes certainly. For how many nights will you be staying and how many people will be staying and when do you wish to arrive? Sentence13: I need it for 3 people and 3 nights starting Sunday. Sentence14: It does have free parking. Would you like to reserve a room? Sentence15: enjoy your stay in Cambridge! Sentence16: Thanks for your help today. Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System