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: Great. Thank you very much for your help today. That is all. Sentence2: Can you just pick a hotel for me with 4 stars that have free wifi in the moderate price range. I'll just need to know the area & address. Sentence3: You can book it from the Aylesbray. Sentence4: I have the Aylesbray Lodge Guest House located in the south. The address is 5 Mowbray Road. Is there any other information you need? I can help you with booking a room if you would like. Sentence5: I'd like to check out the sports center. I need to call the venue to find out the cost of tickets to events. Sentence6: Where will you be leaving from? Sentence7: North 154 chesterton road, North 82 arbury road, North 52 gilbert road, South 5 mowbray road, east, 138 perne road Sentence8: Maybe later. I'd love to find a place to go look at architecture in the east. Sentence9: The only sports center in the east is The Cherry Hinton Village Centre. The phone number is 01223576412. Would you like to know the address or postcode? Sentence10: Yes, can I get the postcode and also the entrance fee? Sentence11: I'm looking for a 4 star hotel. Sentence12: I am sorry there are no places to look at architecture in the east. Would you like me to check another area of town? Sentence13: cb19ej and unfortunately i am not sure what the entrance fee is Sentence14: I have booked your taxi and your contact number is 07276055179. Be on the lookout for a white honda. Sentence15: I have 21 4 star hotels, would you like to tell me more about your trip so I can help find the most suitable hotel for you? Sentence16: I need free wifi and would like it to be moderately priced. Thank you. Sentence17: Of these 11, please give me the area and address of all those that offer free parking Sentence18: That's fine. I'd also like to book a taxi to get there, to depart by 20:15. Sentence19: There are 11 hotels and guesthouses that offer free wifi and are moderately priced. Is there a particular part of town that you wish to stay in? Sentence20: Thank you for using this system. Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User