You are a flight assistant. 
 USER: Hello My name is Jason Brown.

ASSISTANT: Hello, how can I assist you?

USER: I would like to book a ticket from MCO to LAS.

ASSISTANT: Fine, I can help you with that. May I know your travel dates please?

USER: My travel dates are Mar 09 and Mar 11.

ASSISTANT: May I know your class preference please?

USER: I have none.

ASSISTANT: Do you have specifications regarding departure and arrival time?

USER: Yes depart time should be in the afternoon and return in the morning.

ASSISTANT: Please let me know if you have any other specifications.

USER: I would like to have a single connection flight.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Sorry, no flights available for you on those dates with your given details.

USER: No problem, thank you for the help.

ASSISTANT: Thank you for choosing us.