You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Can you aid me to book my ticket from ATL to BOS?

ASSISTANT: Sure, I am happy to help you. Can I have your travelling dates?

USER: My trip dates are Sep 26 and Sep 28 respectively.

ASSISTANT: Do you have any stopover in between journey?

USER: I prefer for direct flight.

ASSISTANT: Is there any other specifications for you?

USER: No other specifications.

ASSISTANT: May I know your good name?

USER: Ryan Wilson here.

ASSISTANT: Sorry, no flights are available on your journey routes.

USER: Thank you for the help.

ASSISTANT: Thank you for contacting us.