You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am looking for a flight from ATL to LGA, can you help me in booking?

ASSISTANT: Sure, I am here to help you in booking. Can you please share your travel dates?

USER: Sure, my planned travel dates are Mar 14 and Mar 16.

ASSISTANT: Ok, please mention your name.

USER: Myself Melissa Nelson.

ASSISTANT: Do you have any time concerns in you journey?

USER: Yes, I would like to start my journey for the evening flight.

ASSISTANT: Sorry, no flights are available on your preferable travel dates.

USER: That's ok, no problem. Thank you for the information.

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