You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: Can you aid me to book my ticket from ATL to PHX?

ASSISTANT: Sure, I am here to help you with that. Can  you please share your planned travel dates?

USER: My trip dates are Apr 13 and Apr 15 respectively.

ASSISTANT: May I know your name please?

USER: Brandon Lee here.

ASSISTANT: Would you like to travel in a connecting flight or direct flight?

USER: I prefer to travel in a connecting flight.

ASSISTANT: Do you have any other specifications?

USER: No other preferences.

ASSISTANT: Sorry to say that, there are no flights found on this route as per your travel dates.

USER: Thank you for the help.

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