You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I guide you today?

USER: Can you please help me in booking from ATL to BOS?

ASSISTANT: Sure, can you please let me know your trip dates?

USER: My journey dates are from Aug 10 to Aug 12.

ASSISTANT: Would you like to fly in economy class flight or business class flight?

USER: I prefer business class.

ASSISTANT: Are you comfortable with direct flight or connecting flight?

USER: I need direct flight.

ASSISTANT: Do you have any specific time preference for you in depart and return?

USER: No.

ASSISTANT: For further proceeding, may I know your good name please?

USER: My name is Jeffrey Moore.

ASSISTANT: Sorry to inform you that, there is no flight found as per your travelling details.

USER: Ok, No issues, thank you.

ASSISTANT: Thank you for reaching us.