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: Are there any good eastern European restaurants in the centre? Sentence2: Chinese is always a good standby when in doubt, lets look for a chiense place. Sentence3: Your welcome. Have a good day. Sentence4: Do any of them serve eastern European food? Sentence5: Reference number is : JKLWFR30 . Is there anything else? Sentence6: Jinling Noodle bar is a great moderately priced chinese restaurant in the centre. Would you like me to make reservations for you? Sentence7: Yes, it is a nice college in the city centre, located on Saint Andrew's Street. Sentence8: Can you get me information on a attraction called emmanuel college? Sentence9: Is there anything else I can assist you with? Sentence10: I'm afraid not. Would you like to look for a different type of cuisine? Sentence11: There are several, do you have a price range in mind? Sentence12: Thank you, goodbye. Sentence13: Moderately priced please. Sentence14: Okay thank you. That was all I needed to know. Sentence15: There are many places to dine Do you have any preferences ? Sentence16: Yes please make that for 4 people at 15:00 on a Sunday. Sentence17: There are 8 restaurants in the centre that serve European food. If you want to go with something cheap, I would suggest the River Bar Steakhouse and Grill. Sentence18: what about eastern european food? Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User