You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Rebecca Hernandez.

ASSISTANT: How may I help you Rebecca?

USER: I am planning to visit Central Park in EWR. Please book a ticket from ATL.

ASSISTANT: Ok, please provide your departure and arrival dates?

USER: My travel dates are from 12/17 to 12/19.

ASSISTANT: Sorry, there are no flights available based on your details.

USER: It's fine. Thank you for your help.

ASSISTANT: Thank you, have a nice day.

USER: You are welcome.