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: well I have a few for you when is your stay? Sentence2: Actually, I don't need a booking yet. You've told me that Prezzo is in the east. All I need is the postcode. Sentence3: I hev five options, on which location do you prefer? Sentence4: You're welcome, have a great day! Sentence5: There are several, is there a particular area you are interested in? Sentence6: I'm sorry, prezzo is actually located in the west. The postcode is cb30ad. Sentence7: Ok great thank you. That is all the information I need today. Sentence8: I also need to find a moderately priced Italian restaurant. Sentence9: i will act on your suggestion. Sentence10: Booking was successful.Reference number is : B6H2PD8G . Sentence11: Hotel you want to book it for 7 people and 5 nights starting thursday and need a confirmation number thank you Sentence12: Is there any moderately priced hotel that offers free parking by any chance? Sentence13: Can you reserve a table? Sentence14: Yes, I can sure book that for you. What evening would you like in particular? How many will be dining? Sentence15: I'm not really picky on an area as long as it is a nice area and the hotel has a 3 star rating. Sentence16: Prezzo is an italian restaurant on the east part of town in the moderate price range. Question: Who has spoken the sentence 15? (A) User (B) System
Output: 


Answer: (B) System