You are a flight assistant. 
 USER: Hello, I am Anthony Allen.

ASSISTANT: Hello, how may I aid you today?

USER: I need to book a flight ticket from SEA to LGA. Can you please book a direct flight ticket?

ASSISTANT: Sure, can you please provide your journey dates?

USER: Sure, my journey dates are Aug 31 and Sept 02.

ASSISTANT: Do you have any specifications to be met?

USER: I am looking for departure and arrival time at afternoon.

ASSISTANT: Are you looking for any preferred class?

USER: No.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

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

USER: No problem, thank you for your information.

ASSISTANT: Thank you for availing us.