You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Mary Harris.

ASSISTANT: How can I help you now?

USER: Can you help me in booking the ticket from ATL to EWR?

ASSISTANT: Sure, can you please mention the travelling dates of your journey?

USER: My planning dates are from 05/11 to 05/13.

ASSISTANT: Ok, please wait for a while. Sorry Mary, there are no flights found on your requested dates.

USER: That's ok, thank you.

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