You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I am looking for a flight from DEN to IAD, can you help me out in booking the flight ticket?

ASSISTANT: Sure, may I know your planned travel dates please?

USER: My trip dates are from Feb 5th till Feb 7th.

ASSISTANT: Do you have any airline preference?

USER: I am looking for a normal-cost airlines.

ASSISTANT: Would you like to travel in a connecting flight or direct flight?

USER: I comfortable with 1 stop over flight.

ASSISTANT: Do you have any other preferences?

USER: No.

ASSISTANT: May I know your good name please?

USER: Myself John Lee.

ASSISTANT: There is a flight available on your requested dates from Delta airlines with a connecting flight in economy class.Shall I confirm your booking?

USER: Please proceed with it.

ASSISTANT: Your ticket is booked with flight 1007.

USER: Thank you for your help.

ASSISTANT: You are welcome.