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: Booking was successful. The table will be reserved for 15 minutes. Reference number is : 1OM7H5U4 . Is there anything else I can assist you with? Sentence2: Yes, I am interested in the Scott Polar Museum. Sentence3: Is there a certain kind of food you would like? Sentence4: That is all, thank you for your help. Sentence5: Is that in the north? Sentence6: CAn you help me plan a trip to see a particular attraction? Sentence7: Sure, the phone number is 01223336540. Can I help you with anything else today? Sentence8: Would you like to book tickets? Sentence9: Is there any restaurants located in the north side of town? Sentence10: ask is a nice place and serves Itailian food,o you want the adress ? Sentence11: I love Italian Sentence12: Ask is in the centre Sentence13: Do you know the name of the attraction, or what type of attraction it is? Sentence14: You're welcome and enjoy your stay. Sentence15: I also need a restaurant in the cheap price range please. Sentence16: There is one. It is da vinci pizzeria. Shall I book it? Sentence17: Yes, please book it for 13:30 on Saturday for 8 people. Sentence18: No, I'd like their phone number if you have it available, please. Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System