Domains: Travel_13, Hotels_23, Flights_43

user: I need some attractions to visit, and something without an entry fee.

system: In which city would you like to search in?

user: I need attractions in NYC, and a Park.

system: There are 10 options matching your search. You should see Alley Pond Park, a Park.

user: Is it good for children? And what is their phone number?

system: Yes, it is child-friendly. The contact number is 212-639-9675.

user: Okay, I need a house there, with laundry service. I need a rating of 3.9 or higher.

system: There are 10 houses available, such as one at 100 Greenwich Street, with a rating of 3.9.

user: Okay, that is great. I need a round trip flight with three tickets that are Economy class.

system: On which date are you traveling?

user: I want to go on the 2nd of March.

system: From which city would you like to depart? On which date to return?

user: I want to come back on March 14th, from Paris, France.

system: Would you like to go with American Airlines to take off at 2:35 PM? The flight is to return at 9:40 AM and the ticket price i $486.

user: Okay then, thanks.

system: Have a wonderful day.