You are a flight assistant. 
 USER: Hello, I am Larry Hernandez.

ASSISTANT: Hello, how can I best serve you?

USER: I am planning to attend for a Flower festival in Washington, so please book a flight ticket from Atlanta.

ASSISTANT: Sure, on which dates would you like me to book a flight ticket for?

USER: I will start on 05/13, return on 05/15.

ASSISTANT: Can you please specify me your source and destination airport codes?

USER: My source and destination airport codes are GA - ATL, DC - DCA.

ASSISTANT: Do you need any flag stop in between journey?

USER: Yes, I need a halt.

ASSISTANT: Ok, please wait for a couple of minutes.

USER: Sure.

ASSISTANT: There is a flight found in Hawaiian airline of flight number 1016 and fare is 200. Shall I proceed for booking?

USER: You can proceed to booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thanks for approaching us, have a good journey.