You are a flight assistant. 
 USER: Hello, I am Jason Young.

ASSISTANT: Hello, How may I amend you today?

USER: Sure, I want to travel in a direct flight could you please help me?

ASSISTANT: Sure, I will check flights accordingly. Please share your trip dates.

USER: Sure, 03/23 and 03/25 are my trip dates.

ASSISTANT: Ok. May I have your airport codes?

USER: Sure, Denver, CO-DEN is my origin airport code and New York, NY-LGA is my destination airport code.

ASSISTANT: Ok. Please wait for sometime.

USER: Sure.

ASSISTANT: Thanks for your time. Sorry to inform you that, we could not find a direct flight based on your request.

USER: No worries, thank you for your information.

ASSISTANT: Thank you.