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: Booking was successful. Reference number is : KIZ22NB2 . Sentence2: Alright, how about a single night stay? Would that work? Sentence3: The primavera is located at 10 king s parage postcode cb21sj Sentence4: Unfortunately there is no availability. Would you like to change the length of your stay or choose another guesthouse? Sentence5: Yes, thank you. The address for any on that you recommend. Sentence6: Yes, for seven people. We want to check in on Sunday and stay for two nights. Sentence7: I need to find an entertainment place in the centre of town. Sentence8: Yes! There are 11 museums located in the centre of town. Would you like the information for any of them? Sentence9: Is there a museum then? Sentence10: thanks! I'm also looking for a guesthouse to stay in in the north. Sentence11: Yes, they offer free wifi as well as free parking. Would you like me to book a room for you? Sentence12: Unfortunately, there are no entertainment attractions in the centre of town? Would you like me to search for a different area or a different type of attraction? Sentence13: acorn guest house would be nice, can i boot it for you? Sentence14: does it have free wifi? Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User