You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Frank Phillips here.

ASSISTANT: Can you please share the your airport codes?

USER: I am planning to visit Puget sound in Seattle. Can you book a flight from Boston?

ASSISTANT: May I know your journey dates?

USER: I start my journey on 05/21 and return will be on 05/23.

ASSISTANT: If you don't mind can you wait a couple of minute?

USER: Ok, take your time. My source airport code is BOS and my destination airport code is SEA.

ASSISTANT: There is a one connecting flight, shall I proceed for booking.

USER: No, is there any direct flight is available?

ASSISTANT: Please wait I will check the status. Sorry for inconvenience there is no direct flight is available on your desired airport code.

USER: Ok, take your time. Ok, no problem thank you for giving information.

ASSISTANT: Thanks for approaching us.