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: Hi I am looking for a moderate priced place to stay that has free wifi. Sentence2: Yes it is a guesthouse. Would you like me to book it for you? Sentence3: I would prefer moderate price range and wifi included Sentence4: Sorry, no it wasn't. I have updated this info for 3 people Booking was successful, the total fee is 70.8 GBP. Reference number is : 5VJX8JWT . Anything else? Sentence5: Let's see what we can find. I have about 17 options. Do you have a certain area you prefer or maybe a price range preference? Sentence6: Did you book that for my whole group? 3 people? Sentence7: So the train should depart from cambridge and go to london kings cross. Sentence8: We have many trains on Friday after 18:15. To narrow it down, can you tell me where is your starting location for the train? And what is your destination? Sentence9: How about kirkwood house? It's in the north. Sentence10: Alright, I have you booked successfully, and your reference number is F74W1S62 . Sentence11: Booking was successful, the total fee is 23.6 GBP payable at the station . Reference number is : U4G7GGGH . Sentence12: no that's all for now. thanks, bye Sentence13: Yes please I need it booked for 3 people for 2 nights starting on Wednesday. Sentence14: That's awesome. Can you also look for a train for me? I'd like to leave on friday after 18:15. Sentence15: Is it a guesthouse? Sentence16: You are welcome. Have a nice trip. Bye. Question: Who has spoken the sentence 14? (A) User (B) System
Output: 


Answer: (A) User