You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: Can you aid me in booking a flight ticket from MCO to BOS?

ASSISTANT: Sure, please share me your trip dates.

USER: Sure, I would like to go on Apr 22nd and return back on Apr 24th.

ASSISTANT: Do you need direct flight or connecting flight?

USER: Ensure it is a single connecting flight.

ASSISTANT: Is there any class preferences for you?

USER: Ensure it is in the business class.

ASSISTANT: May I know your airlines preferences ?

USER: I am comfortable with any airline.

ASSISTANT: For booking, we need your good name. Please mention it.

USER: Myself Alexander Williams.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for opting us.

USER: Welcome.