Domains: Travel_15, Hotels_15, Flights_35

user: Please show me attractions to visit without an entry fee.

system: Where should I be searching attractions?

user: Please look in London.

system: You can check out 30 St Mary Axe (The Gherkin), a historical landmark.

user: What other places can you think of?

system: Check out Alexandra Palace Ice Rink a sports venue.

user: Tell me the phone number.

system: The phone number is 20 8365 2121.

user: Okay, I'd like to find one hotel room there at a two star hotel.

system: A nice 2 star hotel is 45 Park Lane.

user: Yes, that is good.

system: Can I assist you with anything else?

user: I would like to search round trip flights from New York.

system: What day are you returning on the flight?

user: I would like to return the 5th of March.

system: What date are you travelling?

user: I would like to fly out the 2nd of March.

system: Do you wish to fly American Airlines taking off 7:40 pm returning at 2 am for $442 per passenger.

user: Okay.

system: What else can I assist with?

user: No, thanks for everything.

system: Have a great day.