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: Sure, where are you going to? Sentence2: Lets drop entertainment and look up one for the type of college. Sentence3: There are three trains that leave Cambridge after 21:00, would you like me to book one for you? Sentence4: Yes please book the train for me, and I will need the travel time as well. Thank you for your help. Sentence5: I'm going to leicester and need to leave after 21:00. Sentence6: No, that is ok. I appreciate all your help. Sentence7: Find a train that departs from cambridge, leaving on thursday, please. Sentence8: Christ's college, in the centre of town. Number is 01223334900. Address is post code, cb23bu, Saint Andrew's street. No fee to enter. Do you need anything else? Sentence9: I'm looking for a good place for entertainment in the centre. Any recommendations? Sentence10: Any one would be fine, can I just get the address, phone number and postcode? Sentence11: There are 13 colleges in the centre. Do you have one in mind? Sentence12: TR3470 leaves at 21:21 and arrives by 23:06, duration is 105 minutes. I will book it for you if you will tell me how many tickets you need. Sentence13: I hope you got all the information you need. Have a nice day. Good-Bye. Sentence14: Unfortunately there are no places in the centre. Would you like to try another area? Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System