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: yes would you like me to book it for you ?, Sentence2: No, I just need the area and the post code please. Sentence3: Sorry I messed up before. I actually did want an expensive restaurant. Is Kitchen and Bar expensive? Sentence4: No any area is fine with me I just need the area and postcode of a good restaurant. Sentence5: Thanks for your time. That is all for now. Sentence6: the total fee is 116.2 GBP payable at the station . Reference number is : RTTDSKXC Your train leaves at 07:59 Sentence7: Thanks I also need a trin from cambridge to london liverpool street on firday Sentence8: I'm sorry, I wish there were some Caribbean places here, but there isn't. Sentence9: I'm looking for some caribbean food. Sentence10: You are welcome, enjoy your stay in cambridge. Sentence11: I would like to arrive by 11:00. Can you choose the train with the closest arrival time to 11:00 and book it for 7 people? Then give me the reference number Sentence12: I need a train leaving on friday from cambridge can you help me get a ticket? Sentence13: It is in the centre, and the postcode is cb23qf Sentence14: Yes, there are some options. Was there a particular price range or area of town you were looking for? Sentence15: Well, how about a gastropub? Sentence16: what time do you need to arrive by? Sentence17: I'd be happy to help you with that, just let me know your destination. Sentence18: Kitchen and Bar is a great gastropub located in the centre of town. The passcode is cb12qa. Is there anything else I can help you with? Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User