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 would suggest the acorn guest house. Sentence2: It's moderate. Did you want to book? Sentence3: what is the price range? Sentence4: Okay, you got it. Booking was successful, and your reference number is VSC3P8W2 . Sentence5: Yes please, 4 people for 3 nights starting from friday. I will need the reference number. Sentence6: Have a pleasant day, goodbye. Sentence7: Yes, I am in the planning stages and could use some help finding some places to go in town. Sentence8: We have four theatres to pick from, I recommend the mumford theatre, they can be reached at 08451962320 Sentence9: Thank you so much! That's all I need for the moment. Sentence10: i need to see a theater in the center. find me the phone number Sentence11: Well we have many interesting things to see in Cambridge. Is there something specific you were looking for? Perhaps you'd like to visit some of our museums? Sentence12: I am also needing a place to stay with free parking and free wifi. Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User