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: Bummer! I guess I'll try some asian oriental food then Sentence2: Yes, there are many. What is your destination? Sentence3: Wonderful! I think that's all I need for now, thank you so much for your help! Sentence4: TR8604 leaves at 15:36, would this one work for you? Sentence5: Sure, I can help you with that. Do you have a preference in food type or price range? Sentence6: Booking was successful, the total fee is 123.2 GBP payable at the station . Reference number is : KSHHCWCE . Sentence7: Yes, that would be find. I'll need to book tickets for 7 people. Can I have the reference number please? Sentence8: I have two that fit your criteria! Dojo Noodle Bar, and J Restaurant are both in the city centre area. Do you have a preference? Sentence9: My destination is Norwich departing from Cambridge. Sentence10: can you suggest one and I need the address, postcode and their phone number too please Sentence11: Yes, do you have a place that serves corsican food? I also need it to be on the cheap side. Sentence12: I'd recommend the Dojo Noodle Bar. The address is 40210 Millers Yard City Centre. The postcode is cb21rq. The phone number is 01223363471. Sentence13: Thank you! Can you help me find somewhere to eat now? Sentence14: You're welcome, have a great day! Sentence15: No, unfortunately, I do not have any cheap Corsica restaurants. Would you like to look for another restaurant? Sentence16: Do you have any trains leaving after 15:00 on Thursday? Question: Who has spoken the sentence 14? (A) User (B) System
Output: 


Answer: (A) User