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'm looking for a hotel in the north. Sentence2: Would you like to book worth house? Sentence3: I also need a taxi to commute between the hotel and restaurant. Sentence4: No, I like the North. Perhaps there is a guesthouse that is 4 stars? Sentence5: The restaurant should be in the same area as the hotel and should be in the expensive price Sentence6: Can you help me find a restaurant as well? Sentence7: The phone number for Saigon City is 01223356555. The post code is cb41nl. Can I help you with anyone else? Sentence8: I would like to leave the hotel by 8:30. Sentence9: I do want it to be a 4-star place. Sentence10: Thank you for using Cambridge TownInfo centre. Have a great day. Sentence11: Thank you. I just need their phone number and postcode. Sentence12: can you book a room for tuesday, 5 nights, 5 people. Sentence13: When would you like to leave? Sentence14: Sorry, I don't have that information. There phone number is 01223316074. Sentence15: What is the price of the Worth House? Sentence16: Thank you for the booking of the taxi. That will be all foe now. Sentence17: I would prefer the cheap price range. Sentence18: I search for restaurants in the north, there are 9 options, any preferences? Sentence19: It looks like there aren't any 4 star hotels in the north. Would you like me to check another area? Sentence20: Sure, your booking for the Worth House for a 5 night stay has been confirmed. Your reference number is GWIK59YW . May I help with anything else? Sentence21: There are several options for guesthouses in the north with 4 stars, would you prefer moderate or cheap price range? Sentence22: I have many in those categories. How about trying Saigon City? Sentence23: We have two options in North available for you, do you have any additional criteria to choose between those or would you like a reccomendation? Sentence24: I booked you a yellow lexus and you can reach the driver at 07465015812. Would that be all today? Question: Who has spoken the sentence 22? (A) User (B) System
Output: 


Answer: (A) User