You are a flight assistant. 
 USER: Hi. Jonathan Moore here.

ASSISTANT: Hello, how may I guide you?

USER: Can you book a ticket from ATL to EWR?

ASSISTANT: Can I know your preferable dates?

USER: Ok, here are my preferred travelling dates 09/22 and 09/24.

ASSISTANT: I am sorry, there are no flights.

USER: No issues, thank you for the help.

ASSISTANT: Thank you, have a good day.