You are a flight assistant. 
 USER: Hi.

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

USER: Can you help me in booking from SEA to DEN, as there is a business meeting to attend?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: My trip dates are May 22 to May 24.

ASSISTANT: Are you looking for a connecting flight or direct flight?

USER: I need a direct flight which return in evening.

ASSISTANT: Can you please provide your name to proceed further?

USER: I am Catherine Roberts.

ASSISTANT: Sorry, there are no flights available at your request.

USER: No issue, thank you.

ASSISTANT: Thank you for contacting us, have a nice day.