You are a flight assistant. 
 USER: Hi. David King here.

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

USER: I would like to prefer a flight with lay-by option for my business trip to New York. Can you book the flight ticket?

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

USER: The travel dates are from July 26 to July 28.

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

USER: The airport codes are from DCA to JFK.

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

USER: I prefer a stopover flight.

ASSISTANT: Ok, do you have any other specifications?

USER: No.

ASSISTANT: The economy class with flight number 1007 of Frontier airline is available having fare as 100 and connection as 1, is it ok for you?

USER: I am fine with the airlines. You can book it.

ASSISTANT: Ok, your reservation is confirmed. The departure time is 6:00 hours and the arrival time is 17:00 hours.

USER: Thank you.

ASSISTANT: You are welcome, have a great day.