You are a flight assistant. 
 USER: Hello. I am Steven Evans.

ASSISTANT: Hello, how may I serve you at this moment?

USER: I am planning to conduct a free medical camp in Orlando, so please book a flight ticket from ORD to MCO.

ASSISTANT: Sure, I will help you. Please send your travelling dates.

USER: My departure day is Aug 23, return day is Aug 25.

ASSISTANT: Do you have any class or time preferences?

USER: My return time should be evening.

ASSISTANT: Do you have any connection or airline preferences?

USER: I want a flight with one connection.

ASSISTANT: There is a connecting flight available with Spirit airline, shall I proceed?

USER: Ok, proceed to booking.

ASSISTANT: Your booking is done with flight number 1019. Happy journey.

USER: Thank you.

ASSISTANT: You are welcome, have a nice day.