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: The price per ticket on TR8932 is 9.8 GBP. Will that be all? Sentence2: Does it have free parking and internet? Also, I'd like to be in the centre of town. Sentence3: I don't care but it needs to be cheap. Sentence4: Wonderful, could I just have the price for now? I may book myself later. Sentence5: Okay, the allenbell is a cheap guesthouse, would you like me to make a booking? Sentence6: I have the Alexander Bed and Breakfast guesthouse available in the centre. It's cheap, 4 stars, with free wifi and parking. It's in postcode cb12de. Would that work for you? Sentence7: Hi, I'm looking for a guesthouse in Cambridge. Sentence8: We have 11 trains matching your request. Was there a specific time you wanted to depart? Sentence9: What is your departure and destination locations? Sentence10: Yes thank you. I also needs a train on tuesday that arrives by 16:15. Sentence11: I would like to depart from kings lynn and go to cambridge. Sentence12: I have found 24 guesthouses in cambridge. Is there a particular area you are wanting to stay in? Sentence13: Yes, thank you so much! Goodbye! Sentence14: TR8932 will arrive at 15:58 would that work for you? Sentence15: Yes it does and it in the east though, is that going to be problem? Sentence16: Yes, I need one that is in the centre. Please give me the postcode, price range and star of the hotel. Sentence17: Whichever one gets me to Cambridge closest to 16:15. Sentence18: Thank you for using our system! Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User