You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Can you help me to book a flight ticket from OAK to DCA?

ASSISTANT: Sure, we are glad to help you. Please provide your travelling dates.

USER: My travel dates are Mar 16 and Mar 18.

ASSISTANT: Do you have any stopover in between journey?

USER: Yes, I prefer stopover in between my journey.

ASSISTANT: Is there any other specifications for you?

USER: No.

ASSISTANT: May I know your good name?

USER: I am Kevin Carter.

ASSISTANT: We found a connecting flight in United Airlines with a fare of 100 which departs at 9:00 and return at 21:00. Shall I proceed for booking?

USER: Please proceed to book my flight ticket in this airlines.

ASSISTANT: Ok, your ticket is reserved in an economy class and the flight number is 1004.

USER: Thank you.

ASSISTANT: Thank you for choosing us.