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: okay your all set ref # is KWN1JAD4, anything else today? Sentence2: Just pick a place (as long as it's expensive) on the south side and make the reservation and give me the reference number. After that, I'm going to need a taxi. Sentence3: You have been extremely helpful, thank you so much. I am all set. Have a nice day. Bye. Sentence4: The acorn guest house has availability for that time. Sentence5: Please find me a guesthouse that offers free parking Sentence6: Is there a certain type of food you'd like? The options are Chinese, Indian, Italian, and Mexican. Sentence7: Thank you for using our system today! Sentence8: Yes. Please book it for me, in the perimeters I stated above. Sentence9: I need a place that will have space for 6 people staying 4 nights starting from Wednesday. Sentence10: I need a place to eat in the south and VERY expensive for 6 people on wed at 19:00 Sentence11: There are quite a few. 16 to be exact. Are you looking for a certain price range or area? Sentence12: I have booked your party of 6 at the Peking Restaurant. You are booked for Wednesday at 19:00. Your reference number is 0Z92M9D7 . Sentence13: Ill need to taxi to go from the hotel to the restaurant by 19:15. Sentence14: Booking completed! Booked car type : black skoda Contact number : 07463823856 Sentence15: Sure, what area would you like to stay in and what is your price range? Sentence16: What can I get thats a 4 star? Question: Who has spoken the sentence 4? (A) User (B) System
Output: 


Answer: (A) User