You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Raymond Lewis here.

ASSISTANT: How can I aid you?

USER: I would like to travel from EWR to ATL, can you please help me in booking a flight ticket?

ASSISTANT: Sure, I am gleeful to help you. May I know your travel dates please?

USER: Sure, my travel dates are from 06/28 to 06/30.

ASSISTANT: Ok, please wait for a while.

USER: Ok, take your time.

ASSISTANT: Thank you for waiting. Sorry Lewis, there are no flights available for your desired dates.

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

ASSISTANT: Thank you for reaching us.