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: Alright, I have booked the worth house for 3 people for 3 nights starting sunday, your reference number is HVD2IBXM . Is there anything else I can help you with? Sentence2: Yes. The Worth House meets your criteria. Would you like to book a room? Sentence3: Booking was successful, the total fee is 52.8 GBP payable at the station .Reference number is : H829GED4 . what else can i do for you? Sentence4: I'm departing from Cambridge heading to Norwich. I'll need it booked for 3 people. Sentence5: are you looking for something other than the allenbell we discussed earlier? Sentence6: The allenbell fits that criteria. Would you like some more info? Sentence7: Do you need me to book any sort of travel? Sentence8: To or from Cambridge/Norwich? Sentence9: Could you look up a hotel based on what I ask? North area, 4 stars...please. Sentence10: Are there any that has free wifi? Sentence11: Yes, please. I'll need it for 3 people, 3 nights, and we will be arriving on Sunday. Sentence12: Ok great, that is all that I need. Sentence13: alright, call me if you need anything. Sentence14: There are no places available in that area. Is there a different area that you would prefer? Sentence15: I am looking for a cheap room in a guest house. Sentence16: am looking for a place to stay. The hotel doesn't need to include internet Sentence17: Not right now, I also need a train going to Cambridge to Norwich on Wednesday and leave after 19:15 Sentence18: No , thanks for the help! Question: Who has spoken the sentence 12? (A) User (B) System
Output: 


Answer: (A) User