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: Sorry I forgot to hang up. Good bye now. Sentence2: Sure thing it is a moderately priced guesthouse. Sentence3: Ask is located in the city centre. Sentence4: Okay. We have you booked with a car that's a grey Skoda. The contact number is 07764280286. Sentence5: I am looking for information on a restaurant, the name of the place is ask. Can you tell me about it? Sentence6: Could you provide me with their phone number and star rating please? Sentence7: Thank you. I'd like to book a taxi from the hotel to the restaurant. It needs to leave the hotel by 20:00. Sentence8: Yeah any time let us know if you need anything else. Sentence9: The phone number is 01223304906 and the stars is 3 Sentence10: That is all I need. Thank you so much for your help. Sentence11: Yes sure. their address is 12 Bridge Street City Centre and their telephone number and postcode are 01223364917 and cb21uf respectively. Is there anything else you need to know? Sentence12: Okay great. Bye now! Sentence13: Great, thanks. Can I also get some information on Hobsons House hotel? Sentence14: What side of town are they in? Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System