You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know your name please?

USER: This is Donna Young.

ASSISTANT: Yes, how can I help you?

USER: I need your help for booking a flight ticket from CO-DEN to NY-EWR, can you help me?

ASSISTANT: Can I have your travelling dates please?

USER: My travelling dates are 11/16 and 11/18.

ASSISTANT: Sorry, there are no flights regarding your journey.

USER: Thank you for your information.

ASSISTANT: Want to have any other details please?

USER: NO.

ASSISTANT: Thank you and have a nice day.