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 will be leaving from Broxbourne. Sentence2: That works, can you book seats for 4 on that and give me the reference number? Sentence3: Cambridge contemporary art is very edgy. The address is 6 trinity street, postcode cb21su, and it is free. Do you need more information? Sentence4: There is a 09:32 that would arrive by 10:32 for 17.90 pounds. Does that sound good? There are other options if you'd like to leave later. Sentence5: We have lots of museums, architecture, and colleges. What would you be most interested in? Sentence6: My first choice, actually, is not a museum, but an entertainment attraction. What type of entertainment attractions are available? Sentence7: There are 11 museum in the city centre. Is there a particular type of museum you're interested in? Art? Science? Sentence8: I would like a museum. Sentence9: Booking was successful, the total fee is 71.59 GBP payable at the station . Reference number is : BIBTGCNA . is there anything else i can help you with? Sentence10: You know, on second thought a museum may be fun. Could you search listings for a museum in the centre? Sentence11: Do you have any suggestions for entertainment that are in town center? Sentence12: We don't have any in centre. Maybe a different part of town? Sentence13: No thank you that is all I needed today. Sentence14: Where will you be leaving from? Sentence15: There are 11 in the centre is there a type of museum you'd like to visit? There are many art galleries and some science museums. Sentence16: Enjoy your visit! Let us know if we can be of any more assistance. Sentence17: Hey planning on coming out there. Please suggest a train that would arrive in cambridge at 12:30! Sentence18: Art sounds good. Let's try that. Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System