You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I would like to book a ticket from ATL to DTW, can you please help me with that?

ASSISTANT: Can I have your travelling dates?

USER: The travel dates are from 10/21 to 10/23.

ASSISTANT: Do you need connecting flight or direct flight?

USER: I need a direct flight which returns in afternoon time.

ASSISTANT: Do you need any other requirements?

USER: No.

ASSISTANT: May I know your name?

USER: Edward Parker here.

ASSISTANT: There are no flights available on your routes.

USER: That's ok, thank you for your help.

ASSISTANT: Thank you for choosing us.