You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: I am Gregory Miller. I would like to book a flight from DFW to DCA to meet my parents. Can you please help me in booking a ticket?

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

USER: Sure, my travel dates are from 04/26 to 04/28.

ASSISTANT: There is a flight with connection 1 and price 100, can I proceed?

USER: Ok, please book for that flight.

ASSISTANT: Ok, your ticket has been booked with flight number 1009.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.