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: Is there anything available in the north? Sentence2: Oh, just to mention the cost of a single ticket is 37.80 pounds. Have a great day. Goodbye. Sentence3: I do need both free parking and free wifi please. Sentence4: 8 tickets costs 302.29 GBP payable at the station Sentence5: Let's go with City Centre. Sentence6: Great. Please book it for 8 people and 4 nights starting from Monday. Sentence7: Can you also help me find a train to get me to Leicester on Wednesday? Sentence8: Yes, there is the City Centre North B and B and the Worth House. Sentence9: Which one would you like me to book? Sentence10: Not decided on the train yet, still have to consult the group, what is the price? Sentence11: train TR3138 leaves at 07:21 and will arrive in leicester at 09:06. Sentence12: Okay what area of town are you wanting to stay in? Any free parking or wifi? Sentence13: I found several hotels that might work for you in the centre, east and north part of town. Can you tell me where you'd like to stay? Sentence14: I am looking for a place to stay in the cheap price range. Sentence15: Your booking was successful. Your reference number is M6554531 . Sentence16: Thanks. I don't want to book the train yet, so I think I am all set. Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User