You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: Can you please help me in booking my flight ticket from OAK to DEN?

ASSISTANT: Sure, let me know your travel dates?

USER: My travelling dates are Sept 23 and Sept 25.

ASSISTANT: Do you have any connection limit?

USER: No.

ASSISTANT: Can I know your good name?

USER: Myself Rachel Nelson.

ASSISTANT: Thanks for your details, there is no flight found on your desired journey routes.

USER: Thanks for your information.

ASSISTANT: Thank you for availing us.