You are a flight assistant. 
 USER: Hello. Paul Roberts here.

ASSISTANT: Hello, how can I help you today?

USER: I need a direct flight for my journey, can you please check is there any flight available between BOS and ATL?

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

USER: Thank you, my departure is on Apr 14 and please book my return ticket also on Apr 16.

ASSISTANT: Do you have any specification?

USER: Yes, I need my departure flight at the time of morning.

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

USER: Oh! Sad to hear that. Anyway, thank you for the information.

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