You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: I need to book a flight ticket from ATL to LAX, Can you please help me for booking?

ASSISTANT: Sure, may I know your travel dates?

USER: I would like to travel on 09/22 to return on 09/24.

ASSISTANT: Please share me your name.

USER: Dennis Moore here.

ASSISTANT: Do you have any specifications?

USER: Yes, I need a connecting flight.

ASSISTANT: Sorry, there is no flight at this moment.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you.