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: anything else I can assist you with today? Sentence2: Can you book a table for me? Sentence3: Actually don't book the table. just give me the phone number and the food type please. Sentence4: They are in the centre. Postcode is cb41as. Phone number is 07807718591. Sitar Tandoori is an expensive indian restaurant in the east. Sentence5: Yes, I can. Can you tell me what day for the reservation, how many guests and the time? Sentence6: Thank you for booking that. Sentence7: It doesn't matter. Sentence8: I would love to go to some place that has boats. Sentence9: No, I'm good. Thank you for your time and don't work too hard. Bye! Sentence10: It was a pleasure to help. Have a good night. Goodbye. Sentence11: Sure, what part of town will you be in? Sentence12: Could I get the postcode, area and phone number? I also need information on a restaurant called Sitar Tandoori. Sentence13: I would recommend the cambridge punter, located in the centre of town at 251a chesterton road. Do you need anything else? Sentence14: it is 07807718591 and serves indin food Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System