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 am looking for a place to eat in the centre of town. Sentence2: You have many different options to choose from as well as different price ranges. Are you looking for a casual or formal restaurant? Sentence3: I would like it moderate priced and make sure it is a guest house please. Sentence4: Your booking was successful. Reference number is : F20O5QD5 . Is there anything else I can help you with? Sentence5: Can i get the post code as well please? Sentence6: it's for 5 nights for 7 people on friday. Sentence7: It doesn't matter, as long as it is a guesthouse and includes free parking. Sentence8: We have quite a few, may I suggest the acorn guest house? I need to know when you'll be arriving and the number of people please. Sentence9: Do you wish to stay in the centre of town? Sentence10: Can you also find me a place to stay that includes free wifi and in the same price range as the restaurant? Sentence11: The address is 52 Mill Road City Centre. Their phone number is 01223311911. Sentence12: The postcode is cb12as. I can make a reservation for you if you'd like. Sentence13: I need reservations for 7 people at 17:30 on friday. Sentence14: Reference number is : MWDLZXJR . Is there anything else? Sentence15: I'm sorry but there are no guesthouses that match your criteria. Would you like me to look for a hotel instead? Sentence16: check out kymmoy. its asian oriental and its expensive. you want the adress? Sentence17: You have a wonderful day as well. Good bye. Sentence18: I don't really care, not really picky. Sentence19: Thanks, that about does it for me today. Have a good one, bye! Sentence20: are you sure there are no moderately priced guesthouses with parking and wifi in all of cambridge? That seems unlikely to me Sentence21: yes adress and phone number please Sentence22: There are several, do you have a specific area you are interested in? Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User