You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you today?

USER: Can you please help me in booking a flight ticket from DCA to OAK?

ASSISTANT: Can you please share your travelling dates?

USER: I would like to travel on Jan 23 and return on Jan 25.

ASSISTANT: Do you have class preference?

USER: No, I am comfortable with any of the class.

ASSISTANT: Do you need connection limit?

USER: I would prefer connecting flight.

ASSISTANT: May I know your name?

USER: Myself Anthony Hall.

ASSISTANT: We found 1004 Delta Airlines with direct flight and price of 200, shall I proceed with booking?

USER: Please, proceed with the booking.

ASSISTANT: Your booking is done.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.