You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Can you please help me in booking a flight ticket from IAD to DEN to go for death valley adventure?

ASSISTANT: Please share your trip dates.

USER: My trip dates are Oct 9 to Oct 11.

ASSISTANT: Do you need any connection limit?

USER: I need a connecting flight.

ASSISTANT: Do you need any other specifications?

USER: I prefer a economy class.

ASSISTANT: May I know your name?

USER: I am Daniel White.

ASSISTANT: There are no flights available on your requested dates.

USER: No issue, thank you.

ASSISTANT: Thank you for choosing us.