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: Can you check again? Maybe check a guesthouse? Sentence2: It can be any type, not just a hotel. I also need free wifi. Sentence3: Success in booking!! The instructions say that the table will be reserved for 15 minutes. Reference number is DEY84BTQ . Is there anything else in which I may assist you? Sentence4: I am also looking to eat at the Gardenia. Sentence5: I would like to book a table for the same group of people at 12:15 on the same day. Sentence6: Yes we do have a guesthouse called avalon that meets your needs. Were you looking to make a reservation? Sentence7: I'm sorry, I'm not finding any hotels that match your requests. Would you like to try a different area? Sentence8: Yes I need to find a hotel in the north that has a star rating of 4. Sentence9: You're very welcome! Have a fantastic day! Sentence10: Yes, please book for for 4 people starting monday for 4 nights. Sentence11: Booking was successful. Reference number is : YEBKK7SD . anything else i can help you with? Sentence12: I am sorry but there are no matching at all in the North. I suggest trying another area of town. Sentence13: Okay. I can book you a reservation. How many people will be dining and at what time? Sentence14: That's all I need for right now. Thanks for the help! Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System