You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

USER: I am Edward Collins. I was invented to a house warming function, help me in booking my flight ticket from Atlanta GA-ATL to Denver CO-DEN.

ASSISTANT: Sure. May I know your travelling dates?

USER: My travelling dates will be 04/14 to 04/18.

ASSISTANT: Do you have any preferences?

USER: I need a connecting flight.

ASSISTANT: There is no flights found on your details.

USER: Its ok, thank you.

ASSISTANT: Thank you.