You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Ronald Roberts here.

ASSISTANT: How can I aid you?

USER: I need to catch a flight from JFK to JFK. Can you please help me in booking a flight ticket?

ASSISTANT: May I know your preferable journey dates please?

USER: My trip dates are from 06/04 to 06/06.

ASSISTANT: Wait for a while please.

USER: Ok, take your own time.

ASSISTANT: Ronald Roberts, no flights are available with your preferences.

USER: It's ok, no problem. Anyway thank you for your information.

ASSISTANT: Thank you for reaching us.