You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Is there any help that I can assist you?

USER: Rebecca Clark here. I want to attend my business meeting, so please book my ticket from IAD to PHX.

ASSISTANT: Sure, I am happy to help you and on what dates that you are willing to travel to your destination?

USER: My itinerary dates are Dec 21 and Dec 23.

ASSISTANT: Do you have any other preferences?

USER: I prefer business class.

ASSISTANT: May I know your name for booking your flight ticket?

USER: I already mentioned.

ASSISTANT: Please allow me a moment to search for the flight.

USER: Please book my return flight in the morning.

ASSISTANT:  I found a flight with a fare of 500 and there is a 1 drop in your journey and the flight number is 1009 in Hawaiian airlines, shall I proceed with ticket booking?

USER: May I know the flight timings?

ASSISTANT: It will departure at 6:00 AM and return back at 5:00 AM.

USER: Please book my ticket.

ASSISTANT: Your flight ticket booking is done on your journey dates.

USER: Thank you.

ASSISTANT: You are most welcome and thank you for reaching us.