You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Carolyn Wilson here, I have a medical checkup at MCO on 05/15, can you help me in booking a ticket?

ASSISTANT: Sure, may I know your source code and return date?

USER: I am planning to return back on 05/17 to AUS.

ASSISTANT: I found a flight for you with Delta airline and it costs you 200. Shall I proceed?

USER: Please find me a direct flight, as I am not interested in connecting flight.

ASSISTANT: Sorry Wilson, there are no flights with direct connection.

USER: It's ok, I will go by my own vehicle, thank you for your confirmation.

ASSISTANT: Thank you for opting us.

USER: Welcome.