You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Example Input: Sentence1: Of course. Their telephone number is 01223362525. Would you like any more information? Sentence2: TR1339 arrives at 24:07 and takes 38 minutes to arrive there. Sentence3: Thank you. I will also need to find a restaurant that serves Mediterranean food and should be in the expensive price range. Sentence4: What day and time are you leaving Cambridge? Sentence5: Sure, their address is Thompsons Lane Fen Ditton. Is there anything else I can help you with? Sentence6: nope. i think that is all. enjoy your day and stay out of the rain. bye Sentence7: La Mimosa is a great expensive Mediterranean restaurant in the centre. Would you like to book a table? Sentence8: You have a great day, too. Thanks for calling. Goodbye. Sentence9: What is the arrival time? Sentence10: TR1339 is leaving at 23:29 and it is priced at 10.10pounds. can i book? Sentence11: I'm leaving after 18:45 on thursday. Sentence12: I'd like some information on a train going to bishops stortford departing from Cambridge. Sentence13: No I would just like their telephone number please. Sentence14: Can I get their address please? Question: Who has spoken the sentence 2? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: Price range doesn't really matter, but I do want a 4-star place with free parking and internet. Sentence2: I have 19 hotels that match that criteria. please be more specific about the area of town where you'd like to stay Sentence3: Do you prefer a formal hotel, or a guesthouse? Sentence4: OK, what price point do you want me to look for? Sentence5: Booking was successful at the alexander bed and breakfast. Reference number is : MDB2AV4K Sentence6: i need a place to stay Sentence7: The area doesn't matter. Please book for 6 people on Saturday with 4 nights stay. Sentence8: Can you give me a suggestion for a hotel and make that reservation please? Thanks. Question: Who has spoken the sentence 4? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: What about chinese food? Sentence2: Ok, which direction and what time? Sentence3: There are lots of museums in the centre. Did you have a particular one in mind? Sentence4: Yes, thanks. I am looking for a museum in the centre of town. What would you recommend? Sentence5: Booking completed! Booked car type : black audi Contact number : 07792008199 Can I help you with anything else today? Sentence6: I'd like to get some additional information on this museum. May I have the phone number and postcode, please? Sentence7: I can certainly help you with that. What area of town would you like to stay in? Sentence8: I would also like to book a taxi traveling between the two location. Sentence9: No. Just pick one. I need a table for 4 at 16:30 on Thursday. I need the reference number. Also, I need a museum in the centre. Sentence10: Sure I personally like the primavera. Sentence11: I've booked a table for you at Ugly Duckling located at 12 St. Johns Street City Centre. Your reference number is 5VYTXWH4 . Can I help you with anything else? Sentence12: Okay, have a great day. Sentence13: There are none, can I find you find you anything else? Sentence14: There are several options for chinese food. Is there a particular area that you would prefer? Sentence15: No is there one you could recommend? Sentence16: I need 3 rooms for nights in a cheap hotel Sentence17: I'm actually looking for an expensive north African restaurant. Sentence18: No. Thanks. All set. Sentence19: i want it to go to my restaurant by 16:30 Sentence20: The phone number is 01223357708 and the postcode is cb21sj. May I help with something else? Question: Who has spoken the sentence 11? (A) User (B) System
Example Output:
Answer: (B) System