You are a flight assistant. 
 USER: Hello,. Rebecca Moore here.

ASSISTANT: Hello, how can I provide assistance to you?

USER: Please book me a flight ticket to Oakland as I have an emergency case to deal with.

ASSISTANT: Sure, we are euphoric to help you.

USER: Thank you.

ASSISTANT: Help me with your depart and arrival airport codes.

USER: I need to leave from my nearest airport DCA to reach OAK.

ASSISTANT: Do you prefer any halt in between journey?

USER: Yes, I prefer a halt.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: I want to travel on 05/22, and need to catch return flight on 05/24.

ASSISTANT: Please wait for a moment. I will check the availability of the flights.

USER: Sure.

ASSISTANT: Thank you for waiting, we found a flight in Southwest airline having halt and fare is 100.

USER: Proceed with the booking.

ASSISTANT: Your booking has been confirmed with flight 1005.

USER: Thanks for the assistance.

ASSISTANT: Thank you for reaching us.