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: There are quite a few options open to you. Is there a particular type of cuisine you are interested in? Sentence2: I am looking for a restaurant in the expensive price range in the centre. Sentence3: Thank you, enjoy your stay. Sentence4: I recommend train TR3596 it will get you there by 11:24 on Saturday. Want me to book it? Sentence5: The reference number is E1KV4Y86 . May i please help you with something else. Sentence6: I am looking to travel to peterborough and arrive by 11:30 Sentence7: Yes, please. Can you book a table for 4 on Saturday at 12:45? Sentence8: I show the Gourmet Burger Kitchen available on Regent Street City Centre. Would you like to book a table? Sentence9: What is the destination? Sentence10: Booking was successful, the total fee is 52.8 GBP payable at the station. Reference number is : G82GDIBP . Can I help with anything else today? Sentence11: Yes, I'd like to find a place serving North American cuisine. Sentence12: I also need a train please. Sentence13: Yeah, please book it for the same group of people. Sentence14: No, thank you, that will be all. Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User