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: Yes I have two options for you, both with free parking. both are guesthouses and one is a bed and breakfast. Sentence2: No let's try the east side of town. Sentence3: Let's try the guesthouse. Could you please book it for 2 people for 3 nights from Thursday? I will need the reference number as well. Sentence4: I've found a train leaving Kings Lynn on Thursday at 19:11, would you like me to book that for you? Sentence5: Travel time is 47 minutes. Arrival time would be 20:58. Ticket cost would be 9.80 Sentence6: I would like to know what tourist attractions are in the south end of town? Preferably something family friendly and moderately priced. Sentence7: I have several trains heading to Kings Lynn on Thursday. Where and what time would you like your departure to be? Sentence8: I successfully booked your room at the Warkworth House. The reference number is UH7ZYX20 . Sentence9: I need to depart from Kings Lynn aft 19:00 on Thursday. Sentence10: I'm looking for a place to stay in the centre of town with some moderate pricing and they must include free parking, can you help me with that? Sentence11: Are you perhaps looking for a hotel? I've got two moderately priced guesthouses on the south end. Sentence12: Hmm, how long is the travel time on that one? And when does it arrive? Can you get me the price, too? Sentence13: I am sorry but I am not finding anything in the moderate price range for the centre of town. However, I did find two in the south. Sentence14: I will also need a train on the same day as the hotel booking heading to Kings Lynn. Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User