You are a flight assistant. 
 USER: Hello, I am Gregory Jackson.

ASSISTANT: Hello, How can I serve you?

USER: I have to visit manhattan skyline at New York. I need to book a ticket from DFW to JFK.

ASSISTANT: May I know the travelling date details?

USER: Sure, my travelling dates will be on 01/28 to 01/30.

ASSISTANT: Please wait, I will check and let you know.

USER: Sure.

ASSISTANT: Very sorry to inform you, No flights found matching with your details.

USER: No issues. Thank you.

ASSISTANT: Thank you for availing us.