You are a flight assistant. 
 USER: Hello. I am Richard Clark.

ASSISTANT: Hello, how may I aid you?

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

ASSISTANT: Sure, let me know your favourable airport codes.

USER: I have to attend for an Arts & Crafts festival in New York, NY - LGA.

ASSISTANT: May I know your journey dates please?

USER: So, I am heading from Denver, CO - DEN. My planned journey dates are on 10/09 to 10/11.

ASSISTANT: Ok, give me a minute.

USER: Sure.

ASSISTANT: Thank you for your time. There are no direct flights found according to your requirements.

USER: That's Ok, thanks for your help.

ASSISTANT: Thank you for being with us.