You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I  help you?

USER: I have a plan to visit Seattle. Can you help me in booking flight ticket from PHX to SEA?

ASSISTANT: Your travelling dates please?

USER: My trip dates are June 18 to June 20.

ASSISTANT: Do you have any specifications?

USER: I need a direct flight.

ASSISTANT: Is there any thing else?

USER: No.

ASSISTANT: May I know your name please?

USER: Jacob Davis here.

ASSISTANT: I am sorry no flights found on your route.

USER: Ok, no problem. I will any alternate way to reach my destination. Thank you.

ASSISTANT: Thank you for choosing us.