You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Please help me to book a flight ticket from ATL to LAX.

ASSISTANT: Sure, can you please share your travel dates?

USER: My journey dates are from Apr, 26 to Apr, 28.

ASSISTANT: May I know your connection limit?

USER: I need a single connecting flight.

ASSISTANT: Do you have any other specification that you are looking for?

USER: I prefer to return in the afternoon.

ASSISTANT: May I know your name to proceed further?

USER: Dorothy Wilson.

ASSISTANT: I am sorry to inform you that there is no flight available at your request.

USER: Thank you.

ASSISTANT: Thank you for contacting us.