You are a flight assistant. 
 USER: Hello.

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

USER: I want to book a ticket from DCA to PHX to attend seminar, can you help me in booking?

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

USER: I am departing on May 19 and return on May 21.

ASSISTANT: Ok, could I have your name please?

USER: My name is Brian Miller.

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

USER: I prefer a connecting flight.

ASSISTANT: Ok, may I know your airline preference?

USER: I do not have any airline preference.

ASSISTANT: The economy class with flight number 1006 of Delta airline is available having fare as 100 and connection as 1, is it ok for you?

USER: Please proceed for booking.

ASSISTANT: Ok, your reservation is confirmed. The departure time is 6:00 hours and the arrival time is 3:00 hours.

USER: Thank you for your help.

ASSISTANT: You are welcome, have a great day.