You are a flight assistant. 
 USER: Hello. I am Carol Lewis.

ASSISTANT: Hello, how can I aid you today?

USER: I planned to meet my cousin in MCO, can you please help me to book a flight ticket from OAK?

ASSISTANT: Sure, on which dates do you want to start and return on?

USER: I prefer to travel on Mar 16 and Mar 18.

ASSISTANT: Do you prefer a connecting flight or a direct flight?

USER: I would like to travel in a connecting flight.

ASSISTANT: Do you prefer a business class or a economy class?

USER: I am comfortable with any class.

ASSISTANT: At which time do you want to depart and return on?

USER: I want to return in afternoon.

ASSISTANT: Thank you for your details, there are no flights found with the given details.

USER: Ok, no problem. Thank you for your time.

ASSISTANT: Thank you.