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: It was at 17:00, quite a bit before 18:45. Would you prefer a later booking? Sentence2: Yeah, the entrance fee is 5 pounds, and the postcode is cb23na. Sentence3: I am sorry but there are no multiple sports in the centre area. Do you want me to try a different area or a different attraction? Sentence4: Okay. You'll be expecting a blue Ford. Their number is 07043795737. Anything else? Sentence5: When would you like to be picked up? Sentence6: I think that would work. Can you tell me their entrance fee and postcode please? Sentence7: No thanks, but can you book me for 3 people and 5 nights starting on saturday? I'll also need the reference number. Sentence8: How about let's try a nightclub? Sentence9: Im looking for a place to go in the centre area with multiple sports. Sentence10: Was that taxi booking for leaving by 18:45? Sentence11: I just need to arrive at my attraction by 18:45. Can I get the car type and contact number please? Sentence12: It's a blue ford and the contact number is 07043795737. Sentence13: Thank you for using the help desk! Good bye! Sentence14: Hello, I'm looking for a hotel named cityroomz. Can you provide me information about it please? Sentence15: at 17:00 hours please Sentence16: I booked it for you. The reference is L30FIVE7 . Do you need anything else? Sentence17: Yes. It's a 0 star hotel that's located at sleeperz hotel, station road in the centre of town. Would you like their phone number as well? Sentence18: Can you book me a taxi between the two locations please? Sentence19: Thanks for your help! Sentence20: Yes I found 5 nightclubs. Would like to try the Ballare located at Heidelberg Gardens, Lion yard? Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User