You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Stephanie Johnson.

ASSISTANT: How may I help you out?

USER: I have to attend for the interview in Dallas & Fort Worth, so I want a flight ticket from Washington. Can you search a flight for me?

ASSISTANT: Sure, I will help you in booking the ticket.

USER: Thank you.

ASSISTANT: May I know your travelling dates please?

USER: I want to travel on the dates of 11/17 and 11/19.

ASSISTANT: Can I know your airport codes too?

USER: My desired airport codes are from DCA to DFW.

ASSISTANT: Ok, please wait for a while.

USER: Ok, I will wait for your reply but make sure that the price is 200 or below.

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

USER: I think this flight is comfortable for me to travel, so please reserve me a flight ticket.

ASSISTANT: Ok, your ticket has been booked.

USER: Thank you for your valuable help.

ASSISTANT: Thank you for choosing us.

USER: You are most welcome.