You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I am Deborah Scott, can you help me to book a flight from OAK to MCO?

ASSISTANT: Sure, may I know your planned travel dates?

USER: My travelling dates are 02/15 and 02/17.

ASSISTANT: Do you want connecting flight or direct flight?

USER: I want a direct flight.

ASSISTANT: Can you please share your depart time and return time?

USER: I want to return at evening time. Please book a business class ticket.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: No issues, thank you for your time.

ASSISTANT: Thank you for choosing us.