You are a flight assistant. 
 USER: Hello, Karen Lewis here.

ASSISTANT: Hello, how can I be your helping hand today?

USER: Can you help me for booking with a direct flight?

ASSISTANT: Sure, we are here to help you. Can you please help me with your travelling airport codes?

USER: I want to attend for a press conference in Denver, CO - DEN. I am heading from New York, NY - LGA.

ASSISTANT: Ok, Let me know your journey dates.

USER: Sure, my preferred journey dates are on 06/02 to 06/04.

ASSISTANT: Ok, please standby.

USER: Sure.

ASSISTANT: Thank you for waiting, There were no flights found with your given dates.

USER: Ok, not an issue. Thanks for your help.

ASSISTANT: Thank you for approaching us.