You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Cynthia Johnson.

ASSISTANT: How can I assist you today?

USER: I am planning my holiday trip to visit Atlanta. Can you please help me in reserving the ticket from JFK to ATL?

ASSISTANT: Sure, I can help you with that. May I know your planned travel dates please?

USER: I am willing to travel on 04/20 and again I will retrieve on 04/22.

ASSISTANT: Ok, please wait for a while.

USER: Sure, I will wait for your kind response.

ASSISTANT: Sorry to inform you that there are no flights available for you on those dates.

USER: Not a big problem, anyway thank you very much for your kind service.

ASSISTANT: Thank you for reaching us.