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: Yes that sounds good may I have the phone number please? Sentence2: Not a problem! Can I help you with anything else today? Sentence3: How about your area preference and star rating of the hotel? Sentence4: Sure! The phone number is 01223333200. Anything else for you today? Sentence5: I prefer hotels. Moderately priced. Sentence6: No star preference, just as long as it's moderately priced. Thank you. Sentence7: Sure, do you have any area preferences? Sentence8: I would recommend the ashley hotel. Would you like more information? Sentence9: I am looking for colleges to visit while I am in town. Sentence10: Yeah. Moderate price range. Internet and parking are not a priority for me. Sentence11: There are 5 in town, but I recommend Clare College in the west. It's free to visit. Does that sound good? Sentence12: Not right now. Thank you for the information! Sentence13: Thanks for using our service. Have a nice night. Bye. Sentence14: The ashley hotel fits your needs and has 2 stars. Would you like a booking? Sentence15: I'd like one with free wifi, and could you give me the star rating? Sentence16: How about A and B Guesthouse? It is moderately priced. Sentence17: I am also looking for a place to stay. Could you help with that? Sentence18: Nope! That will do it, thanks! Question: Who has spoken the sentence 12? (A) User (B) System
Output: 


Answer: (A) User