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: Thank you, I am also looking to book a taxi to commute between these places. I will be leaving the attraction around 12:45. Sentence2: Here is the address colville road, cherry hinton. Sentence3: Awesome. Thanks so much for your help today! Sentence4: I'm looking to stay at a 4 star place with free wifi. Sentence5: There are 5 options in the north. Sentence6: Phone number is:01223576412 and the postcode is cb19ej. Can I help you with anything else? Sentence7: Are any in the North? Sentence8: Booking completed! Booked car type : blue tesla Contact number : 07305330660 Sentence9: Thank you for contacting the Cambridge TownInfo centre. Goodbye Sentence10: I am also looking for an attraction called the cherry hinton village centre. Do you have any information about this place? Sentence11: OK, can you book a room for me at your favorite place? 4 of us will arrive on Tuesday, and we need to stay for 3 nights. Sentence12: Reference number is : NBAUDV7Y . Is there anything else you need? Sentence13: I have 21 options like that. Would you prefer a certain area of town or price range? Sentence14: Great, can I also have the postcode and phone number? Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System