You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: Alexander Gonzalez here.

ASSISTANT: Ok.

USER: I am planning to visit New York for my business trip and I would like to prefer a direct flight. So can you book the flight ticket for me?

ASSISTANT: Sure, please share your planned trip dates?

USER: The trip dates are from Jan 06 to Jan 08.

ASSISTANT: May I know your airport codes?

USER: My airport codes are from SEA to JFK.

ASSISTANT: Any other requirements to be met?

USER: I would like to prefer a economy class.

ASSISTANT: Please wait.

USER: Ok.

ASSISTANT: Thank you for your valuable time, unfortunately no flights available on that route.

USER: Not a problem. Thank you.

ASSISTANT: Thank you for reaching us.