You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be at your service today?

USER: I would like to travel from PHX to DFW as a business trip, can you do the reservation?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: My journey dates are 04/16 and 04/18.

ASSISTANT: Do you have any other specifications?

USER: I need direct flight with business class.

ASSISTANT: Please help me with your name for booking.

USER: William Turner here.

ASSISTANT: According to your information, I have found a flight with single stop over in your journey with a minimum fare of 800 with flight number 1012. Shall I proceed with this flight?

USER: Go ahead.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: Most welcome.