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: Can I get the contact number? And what type of car is it? Sentence2: I have booked a taxi to take you to La Tasca for your reservation. Sentence3: okay then cityroomz is your only option. do you want me to book it for you? Sentence4: The hotel should include free wifi and doesn't need to have free parking. Sentence5: There are 21 restaurants that meet your needs. Would you like to narrow your search by type of food? Sentence6: Nothing else, thank you very much. Sentence7: Yes, I would like to find something with south african food. Sentence8: There are no restaurants in the centre of Cambridge that serves South African food. Would you like to try a different type or a different price range? Sentence9: We have 32 places for such criteria. Do you have an area in mind? Sentence10: There is La Tasca located at 14-16 bridge street. Would you like me to book a table for you? Sentence11: Can they handle 8 people? And we'll need it for 3 nights starting the same day as the restaurant reservation. Sentence12: Yes that is correct. Thank you! Sentence13: I can help with that. Do you have any specifications? Sentence14: You are very welcome. Sentence15: What about one in the centre of cambridge that serves spanish food? Sentence16: Yes please try 12:00 with the reservation for 8 and once made, send me the reference number. Sentence17: I want the hotel to also be in the centre and moderate price. Sentence18: Is there anything else I can help you with? Sentence19: A blue toyota will be picking you up. Their contact number is 07880874608. Just to confirm you wanted to arrive by 12:00, correct? Sentence20: Ok. I have booked a table for 8 at 12:00. Your reference number is 797L5BG6 . Can I help you with anything else today? Sentence21: I need it in the same area as the restaurant. Sentence22: I'm sorry, but it looks like they have no openings at that time. Would you like to try a different day or time? Sentence23: Yes I'm also looking for a place to stay Sentence24: Yes, I would also like to book a taxi to the restaurant. Sentence25: Yes please, make a reservation for 8 people at 13:00 on friday. Sentence26: I have 5 different options available to you. Is there a price range that you prefer to stay within? Sentence27: Ok I have booked your reservation for 8 people on friday. Your reference number is LS1TUGN7 . Is there anything else I can help you with. Sentence28: I am looking for a moderately priced restaurant in the centre of Cambridge. Question: Who has spoken the sentence 14? (A) User (B) System
Output: 


Answer: (A) User