You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, do you need any help from us?

USER: Could you please check the flight availability in business class?

ASSISTANT: Sure, could you please share your departure and arrival day?

USER: I want to travel on June 18 and return on June 20.

ASSISTANT: Ok, could I have your name please?

USER: My name is Mary Wilson.

ASSISTANT: Ok, may I know your location airport codes?

USER: My source is DCA and destination is DEN.

ASSISTANT: Ok, do you need direct or connecting flight?

USER: I need a connecting flight.

ASSISTANT: Ok, do you have any other specifications?

USER: No.

ASSISTANT: The economy class with flight number 1014 of United airline is available having fare as 100 and connection as 1, is it ok for you?

USER: Ok, proceed with the booking.

ASSISTANT: Ok, your reservation is confirmed. The departure time is 7:00 hours and the arrival time is 10:00 hours.

USER: Thank you.

ASSISTANT: You are welcome, have a great day.