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: That's all I need for now. Thanks for all your help! Sentence2: I am showing 2 guesthouses and 2 hotels. Which would you prefer? Sentence3: Your all set! A blue lexus will be picking you up and the contact number is 07598275631, anything else today? Sentence4: The the cambridge belfry is a 4 star hotel on the west side in the cheap price range. Sentence5: Booking was successful. The table will be reserved for 15 minutes. Reference number is : U6M1IEOW . Is there anything else I can assist you with? Sentence6: Yes, I need a taxi to get us between both places, and I need it to arrive in time for my restaurant reservation. Sentence7: Pick one of the two hotels for us please. Sentence8: It doesnt' matter. I don't care about parking either. Sentence9: Sure, do you prefer hotels or guesthouses? Sentence10: I need a place to stay in the west part of the town? Some place with free wifi please. Sentence11: Sounds good. Let's book it for 3 people on 2 nights starting from friday. Sentence12: Booking was successful. Reference number is : 2T7NK2CG Sentence13: Thank you. I need to find an Indian restaurant that is expensive and in the same area as my hotel. Sentence14: There are five options to choose from. I can recommend the restaurant cocum to you if you'd like Sentence15: That sounds good. Can you reserve a table for 3 people at 16:45 on friday? And tell me my reference number Sentence16: You arr welcome, have a great night. Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User