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 4-star place to stay in the west, and it needs to have free parking. Sentence2: Thank you! Will you please book a table for 1 for 13:30 on Monday? Sentence3: I do not care, book it for the same group of people and 2 nights starting from the same day. Sentence4: Your reservation for 1 at the cambridge belfry this monday for 3 days 2 nights was successful.Your Reference number is: K7N43WRV Is there anything else I can help you with Sentence5: I now need a taxi for the 2 places Sentence6: I need some information on a place to eat call the nirala. Sentence7: Thank you. I believe that is everything I need at this time. Sentence8: No, no preference. Sentence9: The nirala is an indian restaurant in the north side in the moderate price range. Would you like to make a booking? Sentence10: Did you have a preference between cheap and expensive? Sentence11: Ok, I am getting the info up now, what time would you like to be there by? Sentence12: Your table is reserved. Your reference number is 2X07EN14 . Sentence13: You are booked in a blue audi. The contact number is 07195096632. Sentence14: I'm going to the nirala restaurant from the hotel Sentence15: alright, enjoy your day. Sentence16: Sure! Where are you going to first and from where please? Sentence17: Can you book it for me and get a reference number ? Sentence18: I have to make it there before 13:30. Sentence19: Is that all that you will be needing today? Sentence20: There are 3 options that meet your criteria. Would you prefer a hotel or guesthouse? Sentence21: Thank you my table has been reserved and my number is 2X)7EN14. Sentence22: I can book it for you but first I will need to know what day and time you need in addition to how many will be in your party. Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User