You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Michel Martinez, want to travel from BOS to ATL. Can you please help me in ticket booking?

ASSISTANT: Sure, I can help you. Can I know your trip dates please?

USER: Thank you. My travel dates are from 09/22 to 09/24.

ASSISTANT: Can I know your connection limit?

USER: Please check only direct flight.

ASSISTANT: Is there any airline preference?

USER: No, I don't have any particular airline preferenece.

ASSISTANT: Ok, please wait for a while.

USER: Sure, take your time.

ASSISTANT: Thanks for waiting and we regret to inform you that there is no flight available as per your request.

USER: That's fine, thank you.

ASSISTANT: Most welcome.