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 was able to book at table at Anatolia. Monday at 17:15 for 5 people, reference number 62W1W1V0 . What destination would you like for the train from Stevenage? Sentence2: TR8306 leaves for Cambridge Friday 05:54 Sentence3: Cambridge please. Sentence4: Of course! Will you give me a day and time? And how many in your party? Sentence5: Hello, I'm trying to find a restaurant called anatolia. Do you have any info about it? Sentence6: It's a Turkish place in the centre that's moderately expensive. What else would you like to know? Sentence7: It would be for Monday for 5 people at 18:15 if possible. Sentence8: Can you book a table there for me? Sentence9: How about the same day at 17:15. Is that available? I'll also need a train departing stevenage and should arrive by 10:15. Sentence10: Unfortunately, they are fully booked at that time. Can I try another time for you? Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User