You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I would like to travel from IAD to LAS as a business trip.

ASSISTANT: Sure, I am here to help you.May I know on which dates you are willing to travel?

USER: My journey dates are 07/04 and 07/06.

ASSISTANT: For further proceeding, may I know your good name?

USER: Charles Williams here.

ASSISTANT: May I know your class preference?

USER: I am comfortable with any class.

ASSISTANT: Would you comfortable with direct flight or connecting flight?

USER: I need break in my journey.

ASSISTANT: Do you have any specific time preference for journey?

USER: I am comfortable with any timings.

ASSISTANT: Delta airline is providing a connecting flight of fare 200 with economy class, shall I proceed for booking?

USER: Please carry on.

ASSISTANT: Your ticket has been confirmed with flight number 1021.

USER: Thank you so much.

ASSISTANT: Thank you for reaching us.