You are a flight assistant. 
 USER: Hello, my name is Patrick Miller.

ASSISTANT: Hello, how can I support you?

USER: I want to book a flight ticket from CA-OAK to CA-SFO for giving a technical seminar.

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

USER: My departure day is 06/25, return day is 06/27.

ASSISTANT: Ok, Please wait for a while.

USER: I want direct flight.

ASSISTANT: Thank you for being patient. Sorry, we have a connection in between the journey.

USER: Ok, don't proceed to booking.

ASSISTANT: Ok, Thank you for choosing us.

USER: Thanks for your service.