You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you at this moment?

USER: Please reserve me a flight ticket from EWR to ATL.

ASSISTANT: Ok, I will help you. Can I know your travelling dates?

USER: My preferable journey dates are May 07 and May 09.

ASSISTANT: Do you have any other specifications?

USER: I would like to return back in the evening time. I prefer direct flight.

ASSISTANT: Ok, wait for a minute.

USER: Sure.

ASSISTANT: Sorry to say that, there are no flight's available based on your travelling dates.

USER: No problem, thank you for the information.

ASSISTANT: May I know your name?

USER: My name is Amy Perez.

ASSISTANT: Thank you for reaching us.