You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, may I know your name please?

USER: I am Kenneth Perez.

ASSISTANT: Yes Kenneth, how can I help you?

USER: I want to book a flight ticket to attend business meeting in NY - JFK.

ASSISTANT: Please provide me your complete details.

USER: I want to travel from EWR to JFK.

ASSISTANT: Please tell me your travelling dates.

USER: My travelling dates from 12/08 to 12/10.

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

USER: It's Ok. Thank you  for your information.

ASSISTANT: Thank you and have a nice day.