You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I want to book a flight ticket from JFK to ATL, can you help me?

ASSISTANT: Sure, may I know the planned travel dates to check for the flight availability?

USER: Sure, my planned travel dates are May 20 and May 22.

ASSISTANT: Do you have any specifications?

USER: I need a connecting flight.

ASSISTANT: Do you have any other specifications?

USER: I prefer afternoon flight for departure time.

ASSISTANT: May I know the name to reserve the ticket.

USER: Samuel Rodriguez here.

ASSISTANT: Sorry, there are no flights are available for your desired intent.

USER: That's fine, not an issue. Anyway thank you for checking.

ASSISTANT: Thank you for reaching us.