You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

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

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

USER: My journey dates are Feb 14 and Feb 16.

ASSISTANT: Do you have any specifications?

USER: I need a connecting flight.

ASSISTANT: May I know your good name?

USER: I am Samuel Rodriguez.

ASSISTANT: United airlines flight- 1000 of price 100 with connection in economy class matches your given details, shall I proceed?

USER: Go ahead.

ASSISTANT: Ok, your flight ticket has been booked.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.