You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Steven Hernandez.

ASSISTANT: Steven Hernandez, how can I render you today?

USER: I am planning to visit Boston, will you help me in booking the flight ticket from DEN to BOS?

ASSISTANT: Sure, I am here to help you. May I know your travel dates please?

USER: My travelling dates are Nov 05 and Nov 07.

ASSISTANT: Ok, hold on for a moment. Let me check the best available flight for you.

USER: I need a direct flight.

ASSISTANT: Sorry Steven Hernandez, there are no flights available on your requested dates.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Welcome, thank you for choosing us. Have a great day.