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: Ok, their address is Wheeler Street. Sentence2: Jinling noodle bar is in the centre area serving Chinese in the moderate price range. Would you like to reserve a table? Sentence3: Enjoy your dinner. Sentence4: I made a reservation for your party of 3 at the Ugly duckling for Saturday at 15:15. Your reference is PEZ07FH7 . Is there anything else I can help you with? Sentence5: There are 4 options, but i personally recommend the cambridge corn exchange, would you like more info? Sentence6: I want something expensive. Sentence7: I am also looking for a theater. Sentence8: What area of town would you like the restaurant to be in? Sentence9: I do not know you can call 01223357851 and find out. I suspect it varies based on day and time so calling would be best. Sentence10: That's great I will call them, thank you. Sentence11: No thanks. You covered everything. Have a good night. Bye. Sentence12: Yes more info and adress and is there any fee's ? Sentence13: Could you make a reservation for 3 people at 15:15 on Saturday and provide the reference number? Also looking for a theatre in the same area. Sentence14: And i there an entrance fee? Sentence15: No problem, are you all set or is there anything else that hasn't been covered yet? Sentence16: I'd like to be in the centre of town. Sentence17: I'm looking for a Chinese restaurant please. Or one that serves Chinese food. Sentence18: I think you would enjoy ugly duckling. Want more information? Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System