You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Can you help me for booking from IAD to OAK?

ASSISTANT: Sure, may I know the planned travel dates to check for the flight availability?

USER: My planned dates are on Aug 09 and 11.

ASSISTANT: Please provide me the specifications.

USER: I need a stopover.

ASSISTANT: May I know the name?

USER: Carolyn Nelson here.

ASSISTANT: Here, I found a flight with 1 connection and airfare is about 400. Shall I proceed with booking?

USER: Ok, please proceed for booking.

ASSISTANT: In a business class, your ticket has been confirmed for the flight 1026 in United Airlines.

USER: Thank you.

ASSISTANT: Thank you for reaching us.