You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you today?

USER: Could you please book a flight ticket from BOS to ATL?

ASSISTANT: Sure, can you share me your trip dates?

USER: My trip dates are Dec 29 and Dec 31.

ASSISTANT: Do you have any connection limit?

USER: I need a direct flight.

ASSISTANT: Are there any other specifications?

USER: I prefer a business class.

ASSISTANT: Can I have your good name?

USER: I am Kathleen Smith.

ASSISTANT: There are no flights found on your specified travel dates.

USER: No problem, thank you.

ASSISTANT: Thank you for reaching us.