You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you out?

USER: I am Brian Harris. I am planning to travel from DFW to DCA, help me in booking a flight?

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

USER: I like to travel on 10/17 to 10/19.

ASSISTANT: There is a flight with connection 1 and price 300, can I proceed?

USER: Proceed for booking.

ASSISTANT: Ok, your ticket has been booked with flight number 1004.

USER: Thank you.

ASSISTANT: Thank you for reaching us.