You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: John Gonzalez here.

ASSISTANT: How may I help you out?

USER: Reserve a flight ticket for me that is from DTW to IAD. For my business trip to Washington.

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

USER: I am giving you my journey dates that is from 12/09 to 12/111.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

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

USER: Sure, you can reserve the flight ticket.

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

USER: Thank you.

ASSISTANT: Thank you for choosing us.