You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Can you please help me to book a flight from SEA to DEN?

ASSISTANT: May I know your travel dates?

USER: Sure, I want to travel on Oct 31 and need to return on Nov 2.

ASSISTANT: Do you prefer connecting flight?

USER: Yes, I prefer a connecting flight.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: May I know your good name?

USER: I am Laura Nelson.

ASSISTANT: Sorry, no flights are available in this route as per your requested dates.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thank you for reaching us.