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: I do not have anything that meets that criteria. Sentence2: Any are would be fine. Can you just check if you have anything that's 5 star rated? Sentence3: There are many, would you be departing on Sunday? Sentence4: I can help with that. What area would you like to stay in? Sentence5: I recommend El Shaddai. Can I get you information on it? Sentence6: I have two with a 0 star rating, one in the north and one in the centre. Do you have a preference? Sentence7: Is there anything else I can assist you with today? Sentence8: You are booked with reference number 9N3UAJNA . Anything else I can help with? Sentence9: Okay. Thank you for al your help. Sentence10: I would need an area to narrow the search for you. Sentence11: I don't care. I want a 5 star rating though. Sentence12: No, it doesn't matter. Thank you. Sentence13: Your tickets have been booked. Your reference number is 7LBIW6SB . Sentence14: Please help me find a guesthouse to stay in that has free wifi. Sentence15: I am all set. Sentence16: You'll be leaving Cambridge at 11:59 on Friday, for a travel time of 88 minutes. Sentence17: book it for 4 people and 5 nights starting from sunday. Sentence18: How about one that is a 0 star? Sentence19: Have a nice day. Sentence20: Thank you and please inform of the travel time and departure time. Sentence21: 4 people leaving Cambridge and going to London Liverpool Street on Friday, departing after 11:00. Please give me the travel and arrival time as well as the price. Sentence22: Thanks. I also need a train departing from Cambridge after 11:00. Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System