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: There are 13 options available. Would you like a recommendation? Sentence2: I choose Corpus Christi. May I have their phone number, please? Sentence3: I am looking for a place to eat some moderate priced austrian food. Sentence4: Okay, have a great day! Sentence5: Your booking was successful. The table will be reserved for you and your party for 15 minutes. The reference number is XJ15IFK8 . Sentence6: Actually, can I change that to Friday. I would need a reservation that day for 7 people at 18:00. Sentence7: That is all I needed. Sentence8: There are two of those. I recommend anatolia. Their phone number is 01223362372. Sentence9: Do you know of any colleges in the city centre? Sentence10: That sounds good, can you reserve for me? Sentence11: Sorry, I didn't get any matching results. Would you like me to look for other types of food? Sentence12: When would you like the booking made for? Sentence13: Yes, please and if I can also get their the entrance fee. Sentence14: Their phone number is 01223338000. May I find anything else for you today? Sentence15: Oh, that's okay. How about a restaurant that serves turkish food? Sentence16: What time and for how many people? Sentence17: christ's college is free entry or corpus christi is 2 pounds. There are 3 more options that have free entrance also. Sentence18: For tuesday please. Question: Who has spoken the sentence 17? (A) User (B) System
Output: 


Answer: (B) System