You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve your today?

USER: Can you please help me to book a flight from BOS to ATL?

ASSISTANT: Sure, please share me your trip dates.

USER: Sure, I want to travel on Aug 13 and need to return on Aug 15.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I need a connecting flight.

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

USER: My name is Karen Walker.

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

USER: Ok, not an issue.

ASSISTANT: Thank you for supporting us.

USER: Thank you for checking.