You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: Please book a flight ticket from DCA to HOU?

ASSISTANT: Sure, may I know your planned travelling dates?

USER: My journey dates are Nov 05 and Nov 07.

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

USER: I am Helen Collins.

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

USER: I need a connecting flight.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Delta airline is providing a connecting flight of fare 100 with economy class, shall I proceed for booking?

USER: Go ahead.

ASSISTANT: Your ticket has been confirmed with flight number 1014.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.