You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I guide you for today?

USER: I am planning to travel from DEN to ATL, help me in booking a flight?

ASSISTANT: I am here to help you about that. Can you please provide your planned dates of journey?

USER: My travelling dates are Oct 14 to 16.

ASSISTANT: Can you please provide your name for further proceedings?

USER: I am Larry Hall.

ASSISTANT: Would you like to travel in a direct flight or a connecting flight?

USER: Connection flight in economy class.

ASSISTANT: I apologise to say this Larry Hall, there are no flights which travels to your region.

USER: That's ok, thank you.

ASSISTANT: You are welcome, thank you for reaching us.