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: In what section of town are you looking to stay? I have 8 different lodgings that fit your requirements. Sentence2: I am not really picky. Sentence3: I would like the arbury lodge guesthouse Sentence4: Are either of those in the cheap price range? Sentence5: Great, thank you for using Cambridge TownInfo centre. Goodbye! Sentence6: I'm sorry. Alexander bed and breakfast is fully booked. Do you want to book starting another day or for a shorter stay? Sentence7: That sounds good, yes. I need 4 nights booked for me, beginning Friday and for 7 people. Sentence8: No, I've got everything I need. I appreciate your help. Sentence9: No, but the alexander bed and breakfast is in the cheap range and has wifi. It's in the centre of town. Would you like me to reserve a room for you? Sentence10: Yes, 3 nights please and can I have a reference number Sentence11: I've booked that reservation. The reference number is 1G6A07OI . Can I assist with something else? Sentence12: I am looking for a place to stay. The hotel should have a star of 4 and should include free wifi Sentence13: Try the a and b guest house or arbury lodge guesthouse Sentence14: Is it cheap? Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System