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: Unfortunately I am unable to book at 22:00 at Caffe Uno, do you have another time? Sentence2: I need the reservation for three. Sentence3: Ok, TR6692 leaves Cambridge at 19:21 and arrives in Stevenage at 20:10. Will this work for you? Sentence4: I can help you with both of those things. Let's start with what type of food or what part of town you would like to eat. Sentence5: How many people will be dining at cafe uno? Sentence6: thanks alot.that is all i needed for today Sentence7: Yes I have one restaurant matching your criteria called Royal Spice. Would you like their telephone number? Sentence8: That ticket will be 12.80 pounds. Sentence9: Sounds good. Can you book a reservation for Tuesday at 22:00? Sentence10: Could I get the price of that train please? Sentence11: How about cafe uno in the centre? Sentence12: He, I am looking forward to trying some local restaurants in Cambridge. Can you tell me about some train schedules? Sentence13: No thanks, I need a train from cambridge to stevenage in Tuesday. I want to arrive before 21:00 Sentence14: Um I meant 14:45, my mind wandered, who wants dinner two hours before midnight, lol. Same booking but 14:45 please. Sentence15: Thanks. Now I think you could help me with an expensive Italian restaurant perhaps? Sentence16: Great! glad I could help! Sentence17: Booking was successful. The table will be reserved for 15 minutes. Reference number is : MRKAMZJM . Anything else I can help with? Sentence18: Can you help me find a cheap restaurant in the north with indian food? Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System