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 sure can! Which is your departure site (the restaurant or the gallery), and what time would you like the car? Sentence2: Great. Can i have the contact number and car type? Sentence3: I am looking for a place to eat in expensive price range that serves Turkish food. Sentence4: Alright, I was able to book you a car to go from the Cafe Jello Gallery to the Meze Bar Restaurant where you will arrive by 12:45. Sentence5: I have the Meze bar restaurant in the centre of town, would that be good? Sentence6: Yes, I'm also looking for an attraction called the cafe jello gallery, can I get their phone number please? Sentence7: I would like to arrive by 12:45 from cafe jello gallery to the Meze Bar Restaurant Sentence8: Fantastic, thank you, that should be all. Sentence9: Let's try 12:45. Sentence10: Unfortunately there is no availability at that time. Would you like to try another time? Sentence11: Of course, when would you like that reservation? Sentence12: I was able to book you, your reference number is 0AK1Q2QD, can I help with anything else? Sentence13: It is a black ford, and the contact number is 07140981001 Sentence14: Cafe Jello Gallery's phone number is 01223312112. Is there anything else we can do for you today? Sentence15: you are welcome to use our services any time Sentence16: That sounds great, can you book a table for 3 for me? Sentence17: Yes, for three people at 13:45 on Tuesday. Thanks! Sentence18: Can you book me a taxi between those two locations? Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System