You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I am Nicholas Clark. Can you please help me to book a flight from BOS to MCO?

ASSISTANT: Sure, can you share your journey dates?

USER: Sure, my trip dates are June 9 - June 10.

ASSISTANT: Do you have any preferences?

USER: Yes, I need a direct flight and my return date is June 11.

ASSISTANT: Sorry, there is no flight on your given dates.

USER: Ok, not an issue. Thank you for checking.

ASSISTANT: Thank you for reaching us.