You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Myself Jack Harris, I am planning my holiday trip to travel Denver this is a round trip. Can you please help me in booking the ticket from DEN?

ASSISTANT: Sure, I am gleeful to help you. Could you please provide your travelling dates to search for the flight?

USER: I will drop-off 09/01 and again I will return back on 09/03.

ASSISTANT: Please wait for a moment.

USER: Can you please check for direct flight.

ASSISTANT: I got a direct flight 1019 of Spirit airlines, shall I proceed?

USER: Please go ahead.

ASSISTANT: Ok, your booking is done.

USER: Thank you very much for reserving the ticket.

ASSISTANT: Welcome.