You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I need to travel from OAK to DCA, can you help me in doing a reservation?

ASSISTANT: Sure, can I know your trip dates?

USER: My trip dates are Oct 19 to 21.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Are there any other specifications?

USER: No.

ASSISTANT: May I know your good name?

USER: Robert Brown here.

ASSISTANT: Delta Airlines is available with the price of 100 having direct flight and economy class. Can I proceed to booking?

USER: Ok, please proceed.

ASSISTANT: Your ticket has been reserved with the flight- 1011.

USER: Thank you.

ASSISTANT: Thank you for reaching us.