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 can do that! I just need your departure and arrival sites and the time you need the taxi. Sentence2: Are there any museums in Cambridge? Sentence3: The address is The Old Pumping Station, Cheddars Lane. Is there anything else I can help you with? Sentence4: Can I have their address? Sentence5: I'm thinking british food. oh, and if it's in the west that'd be even better. Sentence6: I found 110 restaurants. Please tell me what type of food you like to help narrow the search so i can best serve you. Sentence7: You are welcome! Bye! Sentence8: What is their contact number? Sentence9: The phone number is 01223368650. Anything else I can help you with? Sentence10: There is Saint Johns Chop House that meets your criteria, would you like me to book it? Sentence11: No that's everything for me. Thanks. Bye! Sentence12: I'd like information of cambridge museum of technology. What is their phone number please? Sentence13: Great your booking was successful and they will hold your table for 15mins your reservation number is O447NKTY . Can I help you with anything else? Sentence14: There are about 23 different museums to choose from. To help narrow it down, do you have a part of town you prefer to visit? Sentence15: I am also looking for a place to dine in the moderate price range. Sentence16: Okay, you have a car that will come get you. It will be a blue BMW. Sentence17: The contact number is 07601724141. Is there anything else I can help with today? Sentence18: I will also need to book a taxi. Sentence19: Sounds great! I want to book a table for 7 people at 18:30 on wednesday. Sentence20: I'd like to leave the museum in time to get to the restaurant on time. Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System