You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what can I do for you today?

USER: Could you help me in booking a flight ticket from SFO to MCO?

ASSISTANT: Ok, please let me know your travel dates.

USER: My departure day is Apr 13, return day is Apr 15.

ASSISTANT: May I know your connection limit?

USER: I want direct flight.

ASSISTANT: Do you have any particular depart and return time preference?

USER: My depart time should be afternoon.

ASSISTANT: Sure, please let me know if you have any other preference.

USER: I do not have any other specifications.

ASSISTANT: May I know your name please?

USER: My name is Jonathan Green.

ASSISTANT: We don't have any direct flight available for your route.

USER: No problem, thank you.

ASSISTANT: Thank you.