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: Your room for two people for three nights on Monday was booked successfully. Your reference number is CW9SXT27 . Is there anything else I can help you with? Sentence2: I am not particular about area but I need it to include free parking. Sentence3: I need something moderately priced in the centre. What would you recommend? Sentence4: Please locate me a guesthouse with 4 star rating in Cambridge. Sentence5: Is cost important to you? Sentence6: How about the Alexander bed and breakfast? It is a guesthouse in the center with 4 stars and has free internet and parking. Sentence7: that is it for today. have a nice day Sentence8: Okay, what type of food would you like to eat? Sentence9: Oppss sorry, I thought I had given it to you. We'll be checking in on Monday Sentence10: I think I like it, please book me room for two people for three nights and get me confirmation number. Sentence11: No, as long as it has the amenities and stars that I asked for. Sentence12: I am open to suggestions. I need a booking for 1 at 12:30 on Monday. Can I get a reference number? Sentence13: No problem, I just need the first day that you will be staying. Sentence14: I have many what area would you like it to be in? Sentence15: I also need a restaurant reservation. Sentence16: Sure, what type of restaurant are you looking for? Sentence17: Thank you for contacting us and have a nice day. Sentence18: I reserved a table at Cotto, you reference # is BBARW8R2, anything else today? Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User