You are a flight assistant. 
 USER: Hello, I am Brian Wright.

ASSISTANT: Hello, how can I support you today?

USER: As I am a food lover, I want to taste different varieties of food by attending food festival.

ASSISTANT: Ok.

USER: Can you book a flight ticket from Washington, DCA?

ASSISTANT: Sure. May I know your destination code?

USER: New York, JFK is my landing point.

ASSISTANT: To proceed booking I need your travelling dates.

USER: My travelling dates are 03/28 to 03/30.

ASSISTANT: Please, wait.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no flights found on your requirements.

USER: It's ok, no problem. Thank you for your information.

ASSISTANT: Thank you for approaching us.