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 am planning a trip in Cambridge Sentence2: Are there any expensive restaurants in the south? Sentence3: What time and where are you departing and arriving? Sentence4: Yea, please book me for 8 people on wednesday at 14:30. Sentence5: I'll be leaving Cambridge going to Ely, I'd like to leave after 10:00. Sentence6: Nope you've been wonderful, thanks for all the help. Sentence7: I also need a train. Sentence8: Frankie and bennys is available, would you like to book it? Sentence9: There is one that leaves at 11:50 arriving at 12:07. Would that work for you? Sentence10: There are five expensive restaurants in the south. Would you like Mexican, Italian, Indian, or Chinese food? Sentence11: You are all set, the reference number is OY6PZ53J cost is 35.2 GBP payable at the station . Any other questions today? Sentence12: Booking was successful. The table will be reserved for 15 minutes.Reference number is : 1E5RVHJE .is there any other way i can help you? Sentence13: great, what would you like to know? Sentence14: Unfortunately, I am unable to book at this time. Sentence15: I would like it to leave after 10:00. Sentence16: Thank you for the call, have a great trip. Sentence17: It does and could you please book it for 15 people and could you also give me the reference number? Sentence18: There are 2058 trains to pick from. I'll need to know your departure and destination locations Sentence19: Sorry I actually need that for 8 people on Thursday. Sentence20: italian food willl do Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User