You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: I have planned to attend office meeting in MCO, can you book a ticket from OAK?

ASSISTANT: Sure, please let me know if you need a direct flight or connecting flight.

USER: I need single connection between my trip.

ASSISTANT: On what dates you want me to make the reservation?

USER: My preferred dates are Apr 3rd and Apr 5th.

ASSISTANT: Would you like or travel in the morning or later in the day?

USER: Make sure that my return time must be evening.

ASSISTANT: Any other requirements to be met?

USER: No.

ASSISTANT: May I know your name?

USER: Brandon Smith.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Thank you for waiting, I regret to inform you that there are no flights obtained on your journey dates to book a flight ticket.

USER: No problem, thank you for searching.

ASSISTANT: Thank you for opting us.