You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Please help me to book a flight ticket from BOS to MCO?

ASSISTANT: Sure, may I know your journey dates?

USER: My travelling dates are Nov 30 to Dec 2.

ASSISTANT: Can I know your connection limit?

USER: I need a single connection of flight.

ASSISTANT: May I know your name?

USER: Carolyn Garcia.

ASSISTANT: Do you have any other preferences?

USER: I want to depart in the evening.

ASSISTANT: Sorry, there are no flights available on your request.

USER: No problem, thank you.

ASSISTANT: Thank you for choosing us.