You are a flight assistant. 
 USER: Hi, my name is Michael Miller. I want to book a ticket from EWR to JFK, can you please help me?

ASSISTANT: Hello Michael, how can I help you? Sure, please tell your travelling dates?

USER: My travel dates are 08/02 to 08/04.

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

USER: Ok, that's fine. Thank you for your quick response.

ASSISTANT: Thank you and have a nice day.