You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I am John Brown here, I want to reserve my ticket from BOS to MCO, can you please help me in booking?

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: Sure, my planned dates of journey are from Dec, 27 to Dec, 29.

ASSISTANT: May I know your journey times?

USER: Yes, I need a return time at afternoon.

ASSISTANT: Do you have any requirements?

USER: No, I need a connecting flight.

ASSISTANT: No flight is available for you as per your requests. Sorry to inconveniences.

USER: Ok, no problem. Anyways, thank you for your service.

ASSISTANT: Thank you for reaching us.