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 need to find a place that serves European food to eat at. Sentence2: You're welcome. Have a lovely day. Sentence3: I'd like to depart Cambridge on Sunday sometime after 9:45. Sentence4: Where would you be going to? Sentence5: I appreciate all your help. Goodbye. Sentence6: What price range are you looking for? Sentence7: I have you booked on that train. Your confirmation numbers is NLV3A4JF . Sentence8: That sounds perfect! Can you book me 6 tickets for that train please? Sentence9: I have 11 results for european restaurants, what area would you like to dine in? Sentence10: I need one in the expensive range. Sentence11: I certainly can. Which departure and destination did you have in mind? Sentence12: Wine shop sound good. Could I have their address and postcode please? Sentence13: In the centre, sorry didn't I mention that? Sentence14: I'll be heading to Stevenage. Sentence15: I have the TR8464 train leaving at 11:21 and arriving at 12:10. Would that be good? Sentence16: Thank you so much. Can you help me book a train too? Sentence17: Their address is 40270 King Street City Centre and the post code is cb11ln. Sentence18: There are three options: eraina, michehouse cafe, and darry's cookhouse and wine shop. Which would you prefer? Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User