You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Barbara Carter. I am planning to book a ticket from EWR to ATL. Can you please help me out?

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: I am planing to travel on 05/02 and return back on 05/04.

ASSISTANT: May I know your price limit to proceed further?

USER: My price limit is 500.

ASSISTANT: Sorry to say, no flights were available on your dates.

USER: That's fine.

ASSISTANT: Thank you for reaching us, have a nice day.

USER: Thank you for your help.