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: I'm also looking for a particular attraction. It's called Scudamores Punting Co. Could you give me their information? Sentence2: Booking was successful at HK Fusion. The table will be reserved for 15 minutes. Reference number is : 1ZF8E0IV . Anything else I can help with? Sentence3: I enjoy Chinese food. Sentence4: That will be all, thank you. Sentence5: Yes. Wednesday. 6 people at 15:30. Sentence6: Scudamores is a fun boat attraction in the center of town. They're located at Granta Place, Mill Lane, cb21rs. Can I help with anything else today? Sentence7: You have many choices for chinese in cambridge, any preference on price or area? Sentence8: I have three places fitting that. Shall I book one? Sentence9: I would like that to be in a expensive price range and should be in the centre. Sentence10: Yes. Can I also have their phone number. Sentence11: I am glad I could help you, Thank you. Sentence12: Sure. You can phone at 01223359750. What else can I help with? Sentence13: Yes, I am looking forward to trying some local restaurants when I am there. Can you help me find a place to dine? Sentence14: What type of cuisine do you enjoy? Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System