You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I would like to travel from LAX to DFW, can you please help me in flight booking?

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

USER: I want to fly on Apr 11, return on Apr 13.

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

USER: My name is Helen Lewis.

ASSISTANT: May I know your class preference?

USER: I am comfortable with any class.

ASSISTANT: Would you like to take break in between your journey?

USER: I need a connecting flight.

ASSISTANT: Do you have any specific time preference?

USER: No.

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

USER: Ok, proceed to booking.

ASSISTANT: Your ticket has been confirmed with flight number 1001.

USER: Thank you.

ASSISTANT: Thank you for reaching us.