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 didn't mention that there are guesthouses in the east with free parking. Did you specifically need a hotel type or would a guesthouse be okay? Sentence2: I am looking for some places to go in the east. I'd like an entertainment attraction. Can you give me some suggestions and phone numbers please? Sentence3: What type of attraction is Cherry Hinton Hall? Sentence4: There is no hotel in the east with free parking Sentence5: Cherry Hinton Hall's number is 01223446104. The phone number for Funky Fun House is 01223304705. Sentence6: I recommend the Allenbell guesthouse. Would you like to book a room there? Sentence7: Do you have an accommodation type or price range? Sentence8: okay can you look for a hotel without free parking? Sentence9: It is an entertainment place, does that satiate your desires? Sentence10: Yes Allenbell has internet and the phone number is 01223210353 address is 517a coldham lane. Would you like for me to reserve you a room? Sentence11: What other types of attractions are available in the east? Sentence12: That sounds great. I also need a hotel in the same area as the attraction Sentence13: There are swimming pools, parks, museums and multiple sport attractions as well. Sentence14: I need a hotel with free parking. Sentence15: Can you let me know if they have internet, their address, and phone number? Sentence16: I will take anything with free parking. Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User